Sandra was told to find X where g(x)=7 g(x)=-2x-12
Her first step was to substitute 7 in for X. Why is that incorrect?

Find an equation of the line perpendicular to the graph of 28x-7y=9 that passes through the point at (4,1)

The circumference of a redwood tree trunk is 20π ft, and it is 100 ft tall. what is the approximate volume of the redwood tree trunk? 1,000π ft3 10,000π ft3 4,000π ft3 40,000π ft3

Use the elimination method to solve the systems of equations.choose the correct ordered pair. 7x+4y=39