Given the function f (x) = 3x - 6, what is the value of f (9)

a 5
b 9
c 21
d 27

the equation g = -9t + 100 represents the amount of money remaining on a gift card, g, after t movie tickets have been purchased. how much money will be left on the gift card after 8 tickets have been purchased?

a $28
b $72
c $87
d $92

which value for x and y will make the table represent a function?

x | y

2 | 9

3 | ?

? | 8

two answers choices

a x = 2, y= 6
b x = 3, y= 9
c x = 1, y = 7
d x = 4, y = 8