Benny spent half of his allowance going to the movies. He washed the family car and earned $8. Which equation best represents his weekly allowance if he ended the week
with $13. Let x represent his weekly allowance.

Prism m and pyramid n have the same base area and the same height. cylinder p and prism q have the same height and the same base perimeter. cone z has the same base area as cylinder y, but its height is three times the height of cylinder y. the figures and have the same volume.