In Algebra, we learn about many types of functions. These functions vary from simple to complex. Think about the different types of functions we’ve explored so far (linear, quadratic, and exponential). What features do they share, and how are they unique?

step-by-step explanation:

the answer is 128

if y=4x then you will substitute 4x in for y in the second equation.

8x + 4x = 18 combine like terms

12x = 18 divide by 12 on both sides

x = 18/12 or 3/2

now replace x in the first equation with 3/2 to get

y = 4 3/2

y = 6

the answer is a

(3/2,6)

hope that .

brainliest is always apprectiated

54/3 is 18 so 18 is your answer