Kbhhkb, hbj, bhjbj, bj, bh

Which of the following contains a variable?

Solve each quadratic equation by factoring and using the zero product property. 14x - 49 = x^2

Jude is making cement for a driveway. the instructions show the amount of each ingredient to make 1 batch of cement. complete each statement to adjust the ingredients for each new situation if jude uses these instructions.