Can someone me i'm confused as to what i'm supposed to do.
let f(x) = -­2x ­- 7 and g(x) = ­-4x + 3. find (f o ­5)
a. 3
b. -53
c. -9
d. 23

(urgent ) use pi 3.14 to estimate the circumference of the circle to the nearest hundredth middle is 4in (urgent )

Aswimming pool had 2.5 million liters of water in it. some water evaporated, and then the pool only had 22 million liters of water in it. what percent of the water evaporated?

Which function has an inverse function? a. f(x)= |x+3|/5 b. f(x)= x^5-3 c. f(x)= x^4/7+27 d. f(x)= 1/x²