For the equation 3x + 8 = 29 which value could be a solution

a 8

b 29

c 7

d 21

This problem is Simplification.
3x+8=29
    -8   -8
3x = 21
÷3   ÷3
x = 7

The answer is the last answer choice:
all the real numbers greater than or equal to -3

The range of a function is all the possible y values of a function. From the function you see on the left side, it shows that the minimum value is at (2, -3) and from there it doesn't go any lower meaning all the values will be higher than -3 for the y value.