Rachel took a total of 21 quizzes over the course of 3 weeks. After attending 10 weeks of school this quarter, how many quizzes will Rachel have taken in total? Solve using unit rates.

70

Step-by-step explanation:

If 3 weeks, 21 quizzes was done

If 10 week, how many quizzes was done

So technically this is what the question is about

So let's count in 1 week, how many quizzes were done, to do that, just divide

21/3

= 7

Therefore we can take it as, in one week, 7 quizzes will be done

Therefore in 10 weeks

= 7 x 10

= 70

1 mph

step-by-step explanation:

if the question is asking how much does she drive per mile then,

13 / 13 = 1 mph

yes, gavin is right.

step-by-step explanation:

gavin is correct. 

this problem is about converting 9% per year to how many percent per quarter. the rate is still the same. it only differed in the time period. so, through dimensional analysis,

9% per year  × (1 year / 4 quarters) = 2.25% per quarter

if he was asked to convert 9% per year to how many percent per quarter  compounded quarterly, then you will not simply divide by four. this is because compounding is not linear.

hope this , have a good day. c;