Urgent -
solve 3^(2x) = 7^(x−1).
it's an exponential equation.

7x+8y=-18, 4x-9y=-3 solve the system of equations

Suppose that one doll house uses the 1 inch scale, meaning that 1 inch on the doll house corresponds to 1/2 foot for life-sized objects. if the doll house is 108 inches wide, what is the width of the full-sized house that it's modeled after? in inches and feet.

Simplify this expression. 8x 16(x + y)