A right triangle has a leg of length 5 yards and a hypotenuse of length 18 yards. Find the length of the other leg. Provide an answer accurate to the nearest tenth

Last month, a 770 g box of cereal was sold at a grocery store for $3.10. however, this month, the cereal manufacturer launched the same cereal in a 640 g box, which is being sold at $2.50. what is the percent change in the unit price?

How do i simply this expression (quadratic formula basis) on a ti-84 or normal calculator?

Which expression is equivalent to (4 +6i)^2? ? -20 + 48i 8 + 12i 16 - 36i 20 + 48i