Given the function f(x)=-x^2+4x+9, determine the average rate of change of the function over the interval 1<| x <| 7

Leo has b boxes of pencils. each box contains 6 pencils. he has a total of 42 pencils. the equation that represents this situation the value of b that makes the equation true the first one is b+6=42,6b=42,b=42+6,or 42b=6 the second one are 7,836 48

Darian wants to build a regulation size pool table that is 9 feet in length.he plans he ordered are 18 by 36 inches. what is the scale factor of the dilation he must use to build a regulation pool table

What is the solution to this system of equations? y= 2x - 3.5 x - 2y = -14