Pls help ill give brainliest.
Do all 3 to get brainliest pls

Problem 1
A = length times width
A = w(w + 0.6)
A = w^2 + 0.6w
Answer choice D.
Problem 2
16/9 = 42/x
9(42) = 16x
378 = 16x
378/16 = x
23.625 = x
Answer choice C.
Problem 3
f(-5) = 4(-5) + 3
f(-5) = -20 + 3
f(-5) = -17
Answer choice B.