Answer:

Step-by-step explanation:
11 is the amount per hour, x stands for the number of hours, and he needs to earn at least 90 dollars.
Let's break this down:
The difference: Something's gotta be subtracted
Twice a number: So 2 times a number, or n
and 3: So we gotta subtract 2n and 3
is 11: The final answer is 11
So altogether is:
2n - 3 = 11
Answer:
A
Step-by-step explanation:
Answer: 10cm
Step-by-step explanation: His hair has grown 3cm 7 times over the course of 21 days. This totals 14 in of growth since 21/3*2=14. Then 24-14 gets you 20
Step-by-step explanation:
V= Iwh
v-h = Iw
<u>v-h</u> = I
w
:. I = <u>v-h</u>
w