Without graphing, determine whether the function represents exponential growth or exponential decay y = 2(0.65)

Exponential decay.

Step-by-step explanation:

We have been given the formula of a function and we are asked to determine whether our given function represents exponential growth or exponential decay.

Since we know that an exponential function is in form: , where,

a = Initial value of function,

b = For growth b is in form (1+r) and for decay b is in form (1-r), where r represents rate in decimal form.

Upon comparing our given function with standard exponential function we can see that a = 2 and b = 0.65. Since b is less than 1, therefore, our given function represents exponential decay.

x is the total time in minutes for the free response

you are given number of questions as 15 - m and time per item as 8 minutes

to find x multiply the two givens together:

x = 8 * (15-m) = 8(15-m)