Suppose that w varies directly as x and the square of y and inversely as the square oot of z. If x is increased by 80 %, y is increased by 40 %, and z is increased by 44 6, by how many percent will w increase?

The table below shows that the number of miles driven by Hakeem is directly proportional to the number of gallons he used. Gallons Used Miles Driven Answer: 36 41 45 1274.4 1451.4 1593 What is the rate of gas usage, in miles per gallon? miles per gallon Submit Answer attempt 1 out of 2

Suppose that fund-raisers at a university call recent graduates to request donations for campus outreach programs. They report the following information for last year's graduates. Size of donation Proportion of calls 0.40 $0 0.30 0.25 Three attempts were made to contact each graduate. A donation of $0 was recorded both for those who were contacted but declined to make a donation and for those who were not reached in three attempts. Consider the variable x = amount of donation for a person selected at random from the population of last year's graduates of this university. (a) Write a few sentences describing what donation amounts you would expect to see if the value of x was observed for each of 1,000 graduates. to donate $25, and roughly $10 $25 $50 (c) What is P(x ≥ 25)? You would expect roughly of the graduates to donate nothing, roughly frequencies would be close to, but not exactly, these values. The four frequencies would add to (d) What is P(x > 0)? 0.05 (b) What is the most…

Suppose P varies jointly with r and the square of m.  When r=2 and m=3, then P=36. Find P if r=10 and m=2.