If Jack's salary went from $15 per hour to $17 per hour this year, find the percent increase

13%

Step-by-step explanation:

17$-15$ = 2$

15$ x 0.13 = 1.95$

3/4 ÷ 3/4

step-by-step explanation:

basically divide any proper fraction with itself to fit the criteria.

so if we are using 3/4, then:

3/4 ÷ 3/4 = 1

so 1 is the quotient.

and the numerators for both these fractions is 3.   and if we divide the numerators:

3 ÷ 3 = 1

we see that quotient is equal to our original quotient as well.