3x-9-2x+4. answer?

Complete the solution of the equation. find the value of y when x equals -5. -4x - 8y = -52

Technicians have installed a center pivot, circular irrigator for a farm that covers 25 acres. a.) how long is the irrigation boom (in feet) from the center pivot to its farthest extent? b.) if the irrigation boom makes 4 full revolutions in a day, how many miles does the end of the boom travel in 5 days?

Find the length of the radius of a circle with the center at -7+2i and a point in the circle at 33+11i