Answer:
option (B) is correct ......
You can solve this by setting up a proportion. You can put the number of items correct over the total number. and substitute the unknown number with x.

=

Cross-multiply
3400 = 100x Divide both sides by 100
34 = x
40 - 34 = 6
So, Jill got
6 questions wrong.
4.5 hours x 7 days
31.5 hours
It is not 4.5 x 14 because he works 7 days over the 2 week schedule
Answer:
120 inches
Step-by-step explanation:
hope this helps