Answer:
Y=3x+12 (its the first option)
Step-by-step explanation:
I did the assignment.
Answer:
This is a linear function.

I only know this because I remember the common fractions, and 1/3 is .3333 repeating.
Answer:
80%
Step-by-step explanation:
from $25 to $45
$45/$25 = 1.8
$25 x 1.8 = $45
therefore, the increase is 80%
Answer:
C (3x4) + (5x2) + 20
Step-by-step explanation:
3 things that cost 4 dollars. 5 things that cost 2 dollars and one that cost 20.