Answer: 1/5
Step-by-step explanation: Since there are 5 blue/green marbles in the bag of 20 it would be 5/20 or 1/5.
Answer:
3
Step-by-step explanation:
Formula:

= 3
Answer:
-9
Step-by-step explanation:
You have to plug 8 into the formula for x. f(8) = -2(8)+7 = -16+7 = -9
Answer:
2 years
Step-by-step explanation:
$400 x 14% = $56
$56 x 2 = $112