At 7 AM the temperature was -4 degrees F. At 9 AM it was 8 degrees warmer. What was the temperatuer at 9 AM? degrees F

-4 + 8 = 4

Step-by-step explanation:

If the temperature starts at -4 and gets warmer you are going to add because the numbers are increasing. Start at -4 because that time (7 AM) comes first. Next, add 8 because it got warmer. If you add a positive and a negative you are actually going to subtract. 8-4=4. Take the sign of the bigger number. For example, 8 is bigger than 4 and 8 is positive so the answer will be positive.

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