What is the value of x in the following equation: x + 84 = -22

X-intercept=-5 y-intercept=2 the equation of the line is

Awater tank holds 18000 gallons. how long will it take for the water level to reach 6000 gallons if the water is used at anaverage rate of 450 gallons per day

I’ve been trying all day to figure this puzzle out. i need the work for it aswell. it is a factoring polynomials tarsia. the image is below.