Math  please double check me
posted by Sonya .
There are 42 accounting classes with 31 students in each class. Estimate the total number of students in the accounting classes.
a. 1200
b. 900
c. 1600
d. 1500
answer: c
One kilometer is equal to 1000 meters. What fractional part of a kilometer is 500 meters? Simply your result.
a. 2/3
b. 2/4
c. 500/1000
d. 1/2
answer: d
Maria earns $17 per hour. last week, she worked 10 hours/day for 5 days. What was her gross pay?
a. 850
b. 800
c. 935
d. 1020
answer: d
What is the perimeter of a rectangle if the length is 5/9 cm and the width is 2/9 cm?
a. 5/9 cm
b. 1 5/9cm
c. 7/9
d. 1 7/9cm
answer: c

The first and last are wrong.

Only your second answer is correct. For the first one, you're asked to estimate. Hint: 4 * 3 = 12
Please try again, and we'll be glad to check them again. 
there are 42 accounting classes with 31 students in each class. Estimate the total number of students in the accounting classes.
answer: 1200 students
Maria earns $17 per hour.last week, she worked 10 hours/day for 5 days. What was her gross pay
answer: a 
Your answers are correct now. :)