The sum of twice a number and three is equal to 12
write it as an equation

The rectangle shown has a perimeter of 108 cm and the given area. its length is 6 more than five times its width. write and solve a system of equations to find the dimensions of the rectangle.

0if x and y vary inversely and y=6 as x=7, what is the constant of variation?

Solve each quadratic equation by factoring and using the zero product property. n^2 - 49 = 0