If the price of textbooks is rising 5% per year, a $100 book will cost $105 next year. Assume that prices are rising by 5% per year. Find a function f(x) that describes how much textbooks will cost in x years.

c.

step-by-step explanation:

because first you have to add the 4x, 9x, and the 7x together and you get 20x and then you add the last numbers up and you get 5and then you put the subtraction sign in there and that's how you get the answer.

i believe that the answer is

b. y-1=-2(x-4)

hope this !

h= 12 inches

step-by-step explanation: