Which expression shows the first step in dividing 5x + 3 by x?

What is the name used to describe a graph where for some value of x, there exists 2 or more different values of y?

Sole with work in 10 years, the average number of hours of tv watched per week by teenagers dropped from 23.9 to 21.4. find the percent of change.

Mario has $14.35 left in his wallet. he spent $148.43 for tablecloths. then, he spent $92.05 for napkins. how much money did mario have in his wallet to start with?