Is d y / d x the exact same as f ' (x) ? If yes, which is more commonly used?

Ronna answered 18 of the 20 questions on her second math test correctly. On the first test, she had answered only 15 of 20 questions correctly. What was the percent increase in her score from her first test to the second test? A. 15% B. 35% C. 75% D.

The table shows the side lengths and perimeters of four squares. Side Length (x) Perimeter (y) 4.5 18 8.5 34 10.25 41 13.75 55 Which equation represents the relationship between the side length, x, and the perimeter, y? y = 4x y = x + 13.

Cody saves all his nickels. Today he is getting them out of his piggy bank and wrapping them to take to the bank. He finds he has 360 nickels. It takes 40 nickels to fill each paper wrapper and make a roll. How many wrappers does he need?

Given the equation P = 2w + 2l solve for w. A) 2w = P - 2l B) w = 2l + P/2 C) w = P - 2l/2 D) w = 2l - P/2

Which equation represents a circle with a radius of 8 centered at (-3, 4) ? A. (x - 3) 2 + (y + 4) 2 = 8 B. (x + 3) 2 + (y - 4) 2 = 64 C. (x - 3) 2 + (y + 4) 2 = 16 D. (x - 8) 2 + (y + 4) 2 = - 3

Jack wants to buy 30 chocolate chip cookies that are $1.25 each. If sales tax is 7.5%. What will Jack's total bill be?

Linda did jumping jacks every night for a week. She did 75 on each of the first three nights and 2 times as many on each of the remaining nights. How many total jumping jacks did Linda do that week?

The measure of a single angle in a regular octagon is (4x + 12) Á. Find the value of x. Show equations and all work that leads to your answer.

8x-3x=20 show work to receive credit.

Through: (-4,3), slope=0