Xy
2 8
3 12
4 16
5 20

which equation represents the relationship described in the table?

a) y = 2x
b) y = 4x
c) y = 3x
d) y =
1
4
x

Asmall business produces and sells balls. the fixed costs are $20 and each ball costs $4.32 to produce. each ball sells for $8.32. write the equations for the total cost, c, and the revenue, r, then use the graphing method to determine how many balls must be sold to break even.

Suppose that 3% of all athletes are using the endurance-enhancing hormone epo (you should be able to simply compute the percentage of all athletes that are not using epo). for our purposes, a “positive” test result is one that indicates presence of epo in an athlete’s bloodstream. the probability of a positive result, given the presence of epo is .99. the probability of a negative result, when epo is not present, is .90. what is the probability that a randomly selected athlete tests positive for epo? 0.0297

Consider the sequence below. 3 , 1 , 1/3 , 1/9 , select the explicit function which defines the sequence.