Can someone tell me and explain what are the answers for 1, 2, and 3?

1. 6

2. $7.50

Step-by-step explanation:

1. Divide 99 by 18. You get 5.5 but you cannot cut people in half so you round to 6.

2. He swam 3 miles. He already gets 5.00 dollars from 2 miles he swam. Divide 5.00 by two which is 2.50 because the remaining mile is only one mile.

93.8

step-by-step explanation:

lets say, first number = x

second number = 3x+7

total = 49

(x)+(3x+7)= 49

4x+7 = 49

4x = 42

x = 42/4

x= 10.5

x= 10.5

3x+7 = 3(10.5)+7 = 93.8

hope this