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	The product of the digits of a four digit number		2008-07-26
		From Pete: I am a student preparing for a competition and this was one of the prep problems: The product of the digits of a four digit number is 6x5x4x3x2x1. how many such numbers are there with this property? Answered by Stephen La Rocque.
	Proofs		2008-07-26
		From Taylor: when doing a proof, how do i figure out the steps in which i find the statements? i find the reasons pretty easily but i do not understand how to get the proving part. that would be great if you can help me! Thanks Answered by Victoria West.
	Demographics		2008-07-25
		From shahrukh: Each year for 10 years ,the population of a city increased by 5% of its value in the previous year. If the initial population was 200 000 ,what was the population after 10 years ?? Answered by Penny Nom.
	Solving for Two Variables		2008-07-24
		From Mary: can you help, 2/35= 1/x +1/y ; x Answered by Janice Cotcher, Victoria West and Harley Weston.
	Sum of Digits		2008-07-24
		From Warren: If 100^25-25 is written in decimal notation, what is the sum of digits? Answered by Penny Nom.
	Volume of a Shed		2008-07-24
		From lou: I need to know the interior volume in cubic feet of a shed with the dimensions 8' x 10' x 7' with a roof peak of 9'. Thanks Answered by Janice Cotcher.
	Constructing An Open Box		2008-07-23
		From Rita: An open box with a square base is needed to have a volume of 10 cubic feet. (a) Express the amount A of material used to make such a box as a function of the length x of a side of the square base. (b) How much material is needed for a base 1 foot by 1 foot? Answered by Janice Cotcher.
	z-score		2008-07-23
		From Sophia: Indicate whether the factor influences the numerator or denominator of the z-score and determine whether the effect would be to increase the value of z(farther from zero) or decrease the value of z(closer to zero). a. increase trhe sample size b. increase the population standard deviation c. increase the difference between the sample mean and the value of µ specified in the null hypothesis Answered by Janice Cotcher.
	Braking Distance Relationship		2008-07-23
		From Mr.Adjetey: you are travelling at 30km/h.According to the rule of thumb,the braking distance is 9 metres when braking normally.How long is the braking distance under the same conditions when travelling at 60km/h? Answered by Janice Cotcher.
	Alpha level		2008-07-23
		From anonymous: What is the advantage of using an alpha level of .01 versus a level of .05, What is the disadvantage of using a smaller alpha level? Answered by Janice Cotcher.
	Simultaneous equations		2008-07-23
		From Franco: Solve 3 D + E - F = -10 -2 D - F = -4 -3 D - 4 E - F = -25 Franco Answered by Penny Nom.
	A tangent to a curve through a point not on the curve		2008-07-23
		From Carter: How does one find the tangent points on a curve, given only the curve's function and the x-intercept of that tangent line? i.e. Find the point(s) on the curve y = -(x^2) + 1, where the tangent line passes through the point (2, 0). I know that there will be two such points, one where y is very close to 1, and the other point where y is a large negative number. However, I do not recall how to figure out the tangent line equation given a single intercept and solving to find the tangent points. Answered by Penny Nom.
	Domain and range		2008-07-23
		From Cane: Hi, my name is Cane and i am stuck on this problem. Find the doman and range then graph. y= square root of(x squared - 6x) + Square root of(6x - x squared) Answered by Harley Weston.
	How many gallons of fuel still in the barrel?		2008-07-22
		From Charles: I have barrel 6 feet long and 3 feet diameter that is laying on it's side with 5 inches of fuel, how many gallons of fuel still in barrel Answered by Penny Nom.
	3-D Vectors		2008-07-22
		From jenina: 1. The summit of a mountain, 2450m above base camp, is measured on a map to be 4580m horizontally from the camp in a direction 32.4º west of north. What are the components of the displacement vector from camp to summit? What is its magnitude? Choose the x axis east, y axis north and z axis up. Answered by Janice Cotcher.

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