Identify the relation that is also a function. A.
{(5, 6), (4, 5), (5, 8), (4, 0)}

B.
{(3, −1), (3, 1), (3, 0), (0, 2)}

C.
{(−2, 1), (−1, 2), (1, 4), (−3, −2)}

D.
{(6, 4), (6, −4), (10, 5), (10, −5)}

C

Step-by-step explanation:

let's solve your equation step-by-step.

4x+2=2x+12

step 1: subtract 2x from both sides.

4x+2−2x=2x+12−2x

2x+2=12

step 2: subtract 2 from both sides.

2x+2−2=12−2

2x=10

step 3: divide both sides by 2.

2x

2

=

10

2

x=5

step-by-step explanation:

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