Factorising expressions: could some with these 2 equations?
x^2 + 12x + 50
x^2 + 7x - 4

Abouncy ball is dropped such that the height of its first bounce is 5.5 feet and each successive bounce is 64% of the previous bounce's height. what would be the height of the 7th bounce of the ball? round to the nearest tenth (if necessary).

What is the simplified form of (3.25x10^3)(7.8x10^6) written in scientific notation?

Given sin28.4=.4756, cos28.4=.8796, and tan28.4=.5407 find the cos of 61.6