Fraction: 
Decimal: 0.308
Explanation:
means 4 ÷ 13. If you do that division, you get 0.3076 which can be rounded up to 0.308.
Answer:
20
Step-by-step explanation:
In class 1, they used 10 sweet potatoes.
If they need 30, in class 2, they used 20.
(x + 1) x (x - 4). When you check it you will get your original expression.
Both numbers have the variable x so you add 5 and 12 which gives you 17 and you need to write the variable. The answer is 17x