20
Which expression is equivalent to 7 - 8 - 12a + 4 ?

A -9a

B 31а

C -5a - 4

D 19a + 12

Which expression is rational? 6. , square root two, square root 14, square root 49

Which number is located at point a on the number line? a number line is shown from negative 10 to 10 with each interval mark on the number line representing one unit. point a is labeled one interval mark to the right of negative 5.

Given the functions, f(x) = 2x^2 - 1 and g(x) = 5x, find f(g(x)) and g(f(