Plz help!!

What is the value of x when f(x)=20? What does this mean in context?

P= $1400,300 r = 7 1/2% t = 4 what is i ? $4.29 $429.00 $4290.00

What are the coordinates of the point is 1/4 of the way from a (-6, -3) to b (6, 1)? a. (-3, -2) b. (0, -2) c. (-1, 0) d. (3, 2)

Calculate the density of benzene if 300ml of it weighs 263g. a. 0.88 g/ml b. 1.14 g/ml c. 78,900 g/ml d. 37 g/ml