Mikayla is solving a multi-step equation algebraically. Her simplifying work is shown in the image below. In which step of the work did Mikayla make an error?

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.

If x-1 and x+3 are the factors of x3+10x2+ax+b find a and b

Janie has $3. she earns $1.20 for each chore she does and can do fractions of chores. she wants to earn enough money to buy a cd for $13.50.