There is a brick patio around a fire pit, as shown. Use 3.14 for pi. What is the area of the fire pit?

What is f(3) for the quadratic function f(x)= 2x^2+ + x - 12

Compare the subtraction problems 6/8 - 5/8 = 1/8 and 6/9 - 7/9 = 1/9 why is the answer to the first problem positive and the answer to the second problem negative

If f(x)=2x-6 and g(x)=3x+9, find (f-g)(x)