write an expression to represent the total cost of the materials needed to cover the outside of the cylinder $8 per cm²​

answer: its the third option.

step-by-step explanation:

i just took the test.

i dont know

step-by-step explanation:

image for option 4

step-by-step explanation:

i just know the internet

a and c

for infinitely many solutions we require both left and right sides to be equal

distribute and simplify

a

14 - 8x = 20 - 8x - 6 = 14 - 8x ← both sides equal so infinite solutions

b

6x - 54 = 6x - 54 + x = 7x - 54 ← not equal

c

4x + 16 = 4x + 10 + 6 = 4x + 16 ← both sides equal so infinite solutions

d

5x - 40 + 10 = 5x + 10

5x - 30 = 5x + 10 ← not equal