<u>Answer:</u>
- The solution of the expression is 19.
<u>Step-by-step explanation:</u>
<u>Given:</u>
<u>Work:</u>
- => 7 + q(r − 8)2
- => 7 + 3(10 - 8)2
- => 7 + 6(10 - 8)
- => 7 + 6(2)
- => 7 + 12
- => 19
Hence, <u>the solution of the expression is 19.</u>
Hoped this helped.

Answer:
See below ~
Step-by-step explanation:
We need to represent the situations as inequalities.
===============================================================
<u>Students can work </u><u>no more than</u><u> 23 hours per week</u>
⇒ Let the hours per week be x
⇒ 'no more than' refers to less than or equal to (≤)
⇒ x ≤ 23
=============================================================
<u>Tutors are required to spend </u><u>at least</u><u> 2 hours per week</u>
⇒ At least refers to greater than or equal to (≥)
⇒ x ≥ 2
============================================================
<u>Tutors should spend </u><u>no more than</u><u> 7 hours per week</u>
⇒ As mentioned before, no more than refers to less than or equal to (≤)
⇒ x ≤ 7
14. (n-5)*4+7
15. No, this would not be neccesary because if I were to distribute 1/2 to both 4 and 6, I know that I would get half of those numbers which would give me 2x+3. I also know that if I distribute 1/3 to both 9 and 24, I would get 1/3 of each number which would be 3 and 8.