Pls help, i'll mark brainliest :) no links tho Between 1980 and 2000, the cost of a gallon increased by 30%. In 1980, the cost of a gallon of milk was $2.16.

Questions:

1. What was the cost of a gallon of milk in 1990?

2. What was the cost of a gallon of milk in 1997?​

it happens during combustion and impacts the environment because the plants and trees take in that and it can cause them to die.

step-by-step explanation:

y = | -2(-2) |     →     y = | 4 |     →     y = 4       ⇒   (-2, 4)

y = | -2(-1) |     →     y = | 2 |     →       y =   2       ⇒   (-1, 2)    

y = | -2(0) |     →     y = | 0 |     →       y = 0         ⇒   (0, 0)

y = | -2(1) |   c →     y = | -2 |     →     y =   2         ⇒   (1, 2)    

y = | -2(2) |     →     y = | - 4 |     →     y =   4         ⇒   (2, 4)  

solve systems of equations by graphing. a system of linear equations contains two or more equations e.g. y=0.5x+2 and y=x-2. the solution of such a system is the ordered pair that is a solution to both equations. to solve a system of linear equations graphically we graph both equations in the same coordinate system

noncoplanar points are points that do not lie on the same line.