Solve each system by elimination 9x - 6y = -21 and -9x + 9y = 18

Solve 17= -13 - 8x and show your work.

Is ofat (-25, 0), (25, 0) co- (0, -15), (0, 15)?

To find the inverse of a number a, one can use the equation f(c) = a-1/c=0 where c is the inverse of a use the secant method of finding roots of equations to find the inverse of a = 2.5 ,er = 0.001%