Please answer both questions

X (a) Find a > 1 to express y = 3 () in the form y = 3(a'x). (b) Are these functions growth exponentials or decay exponentials? Explain. O These functions are decay exponentials because they can be written in a form f(X) = c(b_x) where b > 1, 0 These functions are growth exponentials because they can be written in a form f(x) = c(bX) where b > 1. 0 These functions are decay exponentials because they can be written in a form f(X) = c(bX) where b > 1. C) These functions are growth exponentials because they can be written in a form f(x) = C(b_X) where b > 1. The purchasing powerP of a fixed income of $30,000 per year (such as a pension) after 1\" years of 5% inflation can be modeled by P = 30,000(1.05)'t. (a) Find the purchasing power after 5 years. (Round your answer to the nearest dollar.) _x (b) Find the purchasing power after 20 years. (Round your answer to the nearest dollar.) $_x