A lawn service charges $30, plus $15 per hour. If X represents the number of hours, then the expressions for the total charge is 15 X +30. Which table shows the total charge.

It's going to be the first one...
How you solve this is just insert the number of hours you want for X then solve the equation.
15 * 1 = 15
15 + 30 = 45
15 * 3 =45
45 + 30 = 75