Select the correct answer.
anastasia had a part-time job last year. she made $20 per hour and worked every week of the year. each week she worked 7 hours. she paid her monthly expenses and saved the rest of her earnings. at the end of the year, she had $2,000 in savings. what were her average monthly expenses, rounded to the nearest dollar?
a.
$440
b.
$473
c.
$475
d.
$568

A. $440

Step-by-step explanation:

What is important to know here is how many weeks does the year have. A regular year has 52 weeks.

To calculate this we must first multiply the hours worked, the value of these and finally the weeks the year have.

7*20*52= 7280.

To the result of that, you must deduct the savings Anastasia had wich are $2000.

7280-2000= 5280.

$5280 is the amount of money spent on expenses for the entire year. If you divide that between the number of months a year has (12) you will reach the answer to the question.

5280/12= 440.

I hope this answer helps you.

2. angles qrt and qst both measures 156 degrees.

step-by-step explanation:  

we have been given a diagram of a circle and we are told that measure of arc qvt is 156 degrees.  

we can see from our given diagram that angle qrt and angle qst subtends to arc qvt.

since we know that angles subtended by the same arc at the circumference are always equal.

by angle subtended by same arc theorem, measure of angle qrt and angle qst will be equal to the measure of arc qvt.

therefore, angles qrt and qst both measures 156 degrees and 2nd statement is the correct choice.

54 km / hours

step-by-step explanation:

we need to convert seconds to hours

60 seconds = 1 minutes

60 minutes = 1hour

15 m         60 second   60 minutes

  * *         = 54000 meters/ hour

second     1 minute             1 hour

now we need to convert meters to km

1000 m = 1 km

54000 m       1 km

*   = 54 km / hours

hour               1000m