13. given four points r(3,16), s(5,32), t(2,11), v(3,19). what
between rs and tv?
32), t(2,11), v(3,19). what is therelationship
a. perpendicular
b. parallel
c. no relationship
d.they are the same line

Part a: the price of product a increasing by 25% each year. this is because                                                                                             f(x) = 72(1.25)^xis an exponential function with a base of 1.25. suppose that we have a number n. then 25% of n is 0.25n. increasing n by 25% would result in n + 0.25n. factoring out n yields n(1+0.25) = n(1.25), hence multiplying a number by 1.25 increases it by 25%.part b: for product a modeled by f(x), the percent change is 25%. for product b modeled  by f(t), the percent change can be found by                                                        84.5 / 65 = 1.3                                                        109.85 / 84.5 = 1.3                                                        142.81 / 109.85 = 1.3as we can see, the next numbers are obtained by multiplying the previous by 1.3. that means product b has a base of 1.3 and therefore is a 30% increase. the answer is that product b recorded a greater percentage change in price.