Answer:
5: 15x-18
11: 31x + 21
Step-by-step explanation:
24x-18-9x
15x-18
7x + 24x + 21
31x + 21
This is question #8. First what you do is turn all the denominators to 8, and them you just add, so it's 3.5 in decimal, and 3 4/8 in mixed fraction, and if you simplify that you get 3 1/2 as your fraction, and if you want that as improper fraction you get 28/8. And for #7 there must be a diagram, can you show me that, maybe I can help.
When you multiple same numbers with different exponents, the exponents add. Example x^2 * x^3 = x^4
When you divide same number with different exponents, the number subtracts
1. 5^4 * 5^8 = 5^12
2. 11^18/ 11^-4 = 11^22
$39 per gallon
$4,368 = cost of total
Divide ⇒ 4368 : 39
<u>4368</u> = 112
39
Solution: 112 gallons.
