Answer:
1. Yes the parentheses are necessary. To find a fourth of her regular hours you must find the total amount she works during her regular hours.
2. 6
Step-by-step explanation:
(For the second question)
4+8= 12
12 × ½ = 12 ÷ 2
12÷2 = 6
Answer: x=4.128571
Step-by-step explanation:
Answer:
Converges at -2
Step-by-step explanation:
We solve this by using integral by parts.

let:


We use the following expression for integral by parts:


We can take the limit with x tending to -1

The integral converges at -2
A, b, and d are correct whole numbers