Problem page ann will run more than 38 miles this week. so far, she has run 21 miles. what are the possible numbers of additional miles she will run? use t for the number of additional miles she will run. write your answer as an inequality solved for t .

She has run 21 miles already. Let t be the number of additional miles added on. 

In total, she has run t+21 miles 

This is going to be set greater than 38 since "Ann will run more than 38 miles"

So we have this inequality

t+21 > 38

we solve for t by subtracting 21 from both sides

t+21 > 38
t+21-21 > 38-21
t+0 > 17
t > 17

The final answer is t > 17

which means that the possible additional number of miles she could run is anything larger than 17. So t = 18 is one possibility. 

The answer should be c.