Refresh myself in one step equation 31=48+x

Credit card a offers an introductory apr of 3.4% for the first three months and standard apr of 15.7% thereafter,

Arational number that is equivalent to -20/4?

The table below shows the number of free throw shots attempted and the number of shots made for the five starting players on the basketball team during practice. each player's goal is to make 80% of her shots.