Item 16 your friend earns $10.50 per hour. this is 125% of her hourly wage last year. how much did your friend earn per hour last year?

$ 10.50 divide by 5 b 
to find 25% of her hourly wage last year 
Then multiply by 4 to find 100% of her hourly wage last year. 

ex: $ 10.50 divide by 5 
= $ 2.10 
Then multiply by 4 
$ 2.10 x 4 = $ 8.40

The third box is a function

Ithink the answer is b