Joe paid $87.50 for a coat after its price was reduced by 30%. What was the original price before the sale?

How do you determine whether a relationship represented as as graph is linear or nonlinear

If f(x)=x+7 and g(x)=1/x what is (fog)(x)

Afactory buys 10% of its components from suppliers b and the rest from supplier c. it is known that 6% of the components it buys are faulty. of the components brought from suppliers a,9% are faulty and of the components bought from suppliers b, 3% are faulty. find the percentage of components bought from supplier c that are faulty.