Can anyone please help me! Please Find F^1(x), the inverse of F(x).

1. f(x) - 9x - 4

2. f(x) = 3/x-2

3. F(x) = 2x + 12

4. F(x) = 3x - 4

Liz had 140 pens and inna had 100 pens. after inna gave liz some pens, liz had 3 times as many pens as inna. how many pens did inna give liz?

How do i solve uniform motion problems?

Apiling for a high-rise building is pushed by two bulldozers at exactly the same time. one bulldozer exerts a force of 1250 pounds in a westerly direction. the other bulldozer pushes the piling with a force of 2650 pounds in a northerly direction. what is the direction of the resulting force upon the piling, to the nearest degree? a. 65 n of w b. 25 n of w c. 45 n of w d. 35 n of w