Answer:
a + 1
to get 1 more than a you add 1 to a because you don't know what a is
The answer is 29.9999The nearest whole number is 30.
A good way to figure out an independent variable is to know what a dependend variable is and its bascially what changes because of the independent variable. So the dependent variable is the $200 because it changes due to the amount of hours Sally worked thus meaning the independent variable would be 10 hours.
