Answer:
c. -4a + 22b
Step-by-step explanation:
Because it's decreasing, you use the formula (1-x/100)y with x the percentage decreased which is here 40, and y the number decreased which is here 90
So we get
(1-40/100) * 90
(100/100 - 40/100) * 90
60/100 * 90
5400/100
54
So 90 decreased by 40% is 54
Hope this Helps :)
... <span>exactly one output for each input
This is an important concept; be certain that you understand it.
</span>
Answer:
a
Step-by-step explanation:
