What is the axis of symmetry of the function of - (x+9) (x-21)

Heather's friend borrowed $150.00 from her last week. Heather will get paid back one third of the money next week, and she will give five eighths of that to her brother. What is the amount Heather's brother will receive?

The combined area of 2 squares is 45 square centimeters. each side of one square is twice as long as a side of the other square. what is the length of each side of the larger square

4 (4x - 14) + 4x = 184

The set of whole numbers includes all positive integers

Which math expression represents the phrase? 4 times the sum of a number and 9 a. 4 · n + 9 b. 4 · (n · 9) c. 4 + (n + 9) d. 4 · (n + 9)

Identify the slope of the line y=-3x - 4

Suppose you used the Distributive Property to get the expression 12x + 3y - 9. With what expression could you have started?

Other ways to express 10^4

What are the x-intercepts of the parabola x2 - 3x - 28?

In boot camp, a cadet must use a rope swing to cross an obstacle without falling into the water hazard below. Unfortunately, they miss the platform on the other side and swing back to where they started. If it takes the cadet 5.