(x^2+ 4)^2- 11(x^2 + 4) + 24 = 0

Average acceleration: i have no idea how to do this.

Television sizes are based on the length of the diagonal of the television's rectangular screen. so, for example, a 70-inch television is a television having a diagonal screen length of 70 inches. if a 70 inch television's diagonal forms a 29°angle with the base of the screen, what is the vertical height (1) of the screen to the nearest inch? 70 inhin

Varies inversely with x. if y=8.5 when x=-1 find x when y=-1