Which is the last operation when evaluating (8-2x) to the power or 2 + 4 for x=3

Big boi and travis scott are performing at the super bowl. travis scott is 62 years younger than twice big boi’s age. the sum of their ages is 70 years old. use b to represent big boi’s age. write and solve an equation.

When 142 is added to a number the result is 64 more times the number my options are 35 37 39 41

Calculate the average rate of change over the interval [1, 3] for the following function. f(x)=4(5)^x a. -260 b. 260 c. 240 d. -240