The answer is B.
When you set up a ratio of all the corresponding sides, the ratios all equal 2:1
Your choices of answers are not clear, is the letter x a variable or a multiplication?
If it is possible, take a picture of your question.
24 laps
1 hour = 60 minutes
4/10 x 60 = 24
To find out how much he makes per week, take the amount and divide it by the week.
1520/4=380.
He makes 380 per week.
First distribute: -4h - 20 + 4h
Combine like terms: -20
The answer is -20
