Solve the system of equations using substitution
y=-2x + 1
4x + 2y = -1

(0, -3)
(-3,0)
no solution
infinitely many solution

Aswimming pool had 2.5 million liters of water in it. some water evaporated, and then the pool only had 22 million liters of water in it. what percent of the water evaporated?

Find the missing dimension extra points

How do you write 600 as a product of its prime factors (index! )