Enrique has to pay 80% of a $200 phone bill. Explain how to use equivalent ratios to find 80% of $200.

Sherina wrote and solved the equation. x-56=230 x-56-56=230-56 x=174 what was sherina’s error? sherina’s work is correct. sherina only needed to subtract 56 from 230. sherina made a subtraction error when subtracting 56 from 230. sherina should have added 56 to both sides of the equation.

The radius of the earth is two times the radius of the moon. what fraction of the volume of the earth is the volume of the moon?

Solve each quadratic equation by factoring and using the zero product property. 14x - 49 = x^2