Which number from the replacement set {3, 6, 12} makes the equation 2x + 3 = 9 true?

Isee the amount was $90.00 then reduced to $75.00 , what is the percent ?

1. a parachutist is 800 feet above the ground when she opens her parachute. she then falls at a constant rate of 5 feet per second. select the equation that represents this situation. h = -800t + 5 y = -5x + 800 h = 5t - 800 y = 800x + 5 i need

Sarah used her calculator to find sin 125 degrees. she wrote down sin sin125 degrees.57. how could sarah recognize that her answer is incorrect?