The answer is c.
Explanation:
Something cannot be a function if there is more than one of the same number in the x coordinate. For C there are two 9’s in the x box.
Because you add both negative x’s which is -2 and add the -6 in the right side so then it’s -2x=4
Divide and you get x=-2
3/8=x/20
Multiply both sides by 20.
20(3/8) = 60/8 = 15/2 = 7.5
7.5 = x
Answer: F
Step-by-step explanation: 90/3.28 equals 27.4390244