Find the missing exponent: 5^11/5?=5^4

The function a represents the cost of manufacturing product a, in hundreds of dollars, and the function b represents the cost of manufacturing product b, in hundreds of dollars. a(t) = 5t + 2 b(t) = 7t - 2t +4 find the expression that describes the total cost of manufacturing both products, a(t) + b(t). a. 7t^2 - 7t + 2 b. 7t^2 + 3 +6 c. 7t^2 + 7t - 6 d. 7t^2 - 3t + 6

For what values of x is x2 + 2x = 24 true?

The function f(x) = 14,600(1.1)* represents the population of a town x years after it was established. what was the original population of the town?