Como escribo (8 + 4) x 8 + 4 en letras

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?

Simplify. 4+3/7x-2-2/7x a. 2-5/7x b. 6-1/7x c. 2+1/7x d. 6+5/7x

Which expressions equal 9 when x=4 and y=1/3 a. x2+6y b. 2x + 3y c. y2-21x d. 5 (x/2) -3y e. 3x-9y