4. You are taking a typing class and can now type 30 words per minute. a. Set up a proportion to solve for the amount of time it would take you to type 400 words.

b. Solve the proportion in part (a).

c. Set up a proportion to solve for the number of words you could type in 10 minutes.

d. Solve the proportion in part (c).

you need to show us the graph.

step-by-step explanation:

no he doesnt because "-16' is negatiive

step-by-step explanation:

hello from mrbilldoesmath!

answer:   x (x+6)^2, choice b

discussion:

factor x out of the equation:

x^3 + 12x^2 + 36x = x (x^2 + 12x + 36).

note that 6+6 = 12 and 6*6 = 36 so the above factors into:

x (x+6)^2

which is choice b

you,

mrb