The price per gallon of gasoline at a truck stop increases by 21% over the course of a year due to a shortage of oil. The following expression represents the price per gallon of gasoline, in dollars, after t years. 2.15(1.21)^t

Write an exponential expression in the form (b)c that reveals the monthly rate of increase of the price of gasoline. Round any decimals to the nearest thousandth.
(b)^c

option a.

step-by-step explanation:

if you look closely at the graph, we can notice that the function is not defined at two different points.

if you look at functions b and c, you will notice that both functions are not defined at just one point. the function b is not defined at x= -5/2 and function c is not defined at x=-5. both options are discarded, given that our function should not be defined at two fiferent points.

now, if you look closely at the graph you will notice that the function sketched is not defined at x=5 and x=-2.

-2x + 7 = 7

subtract 7 from both sides.

-2x = 0

divide both sides by -2.

x = 0