The sum of a number and its square is 156. Which of the following equations describes the statement?

A. x + x = 156
B. x + xcube = 156
C. xcube - x = 156
D. x - xcube = 156

When you answer this can you explain

Is the power produced directly proportional to the wind speed, give reasons for your answer?

Oliver had $50 on the day before his birthday. after he recived some money for his birthday , he had $75. write and solve eqaution to find how much money oliver received for his birthday. x+50=75