Sam works two jobs, one at the zoo and the other at the library. he drives 24 miles round-trip to the zoo and 9 miles round-trip to the library. he never works two jobs in the same day. his car has a 15 gallon gas tank and gets 20 miles per gallon. if his tank is now empty and he has worked 12 days at the library since his last filling up, how many days did he work at the zoo?

where is the figure

let x be the money she spent so that she can earn the free t-shirt.

since, she already spent $112.49

⇒

also, as per the statement: jennifer must spend $250 or more in order to qualify for a free t-shirt at the store.

then,

we have an inequality i.,e

subtract 112.49 from both sides we get;

therefore, $137. 51 more money does jennifer need to spend so that she can earn the free t-shirt