What is the friction in simplest form of 5/5

Use the elimination method to solve the system of equations -x+5y=-4 and 4x+3y=16

Aheated piece of metal cools according to the function c(x) = (.5)x ? 7, where x is measured in hours. a device is added that aids in cooling according to the function h(x) = ? x ? 2. what will be the temperature of the metal after two hours?

Simplify 15(x - 4)(x -1)-3(x + 4)(x - 1) with steps