Again, I'm really not sure if this is right, and please tell me where I got it wrong if I did.
16. 
17. 
I really hope this helps, and I feel really bad when someone asks me to help and I can't :((
Answer:
11,356 ml.....................
Answer:
x = 5 (given)
y = 3 (given)
3x^2 + y
3×5^2 + 3
78
If I messed up with the z. You said z is 5
Then the answer will be 75+ y
15% = .15
20.75 × .15 = 3.1125 rounded to 3.11
answer = $3.11
Let n represent the number.
"the sum of a number and 7" is (n+7)
Three times "the sum of a number and 7" is 3(n+7)
"is" translates to "=".
"five times the number" is 5n
Two less than "five times the number" is 5n-2
Your equation is
3(n+7) = 5n-2
