I need help with my math

39

Step-by-step explanation:

For question number one

DBE has the measure x - 12

It is part of a 90 degree angle so to solve it we can use an equation.

2x - 12 = 90

2x = 102

x = 51

sub in the value to get 39.

Number two has a vertical angle so it has the same value as number one; 39

Number 3 is a 90 degree angle

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