Concept explainers
To find: Total number of music downloads A earn.
Answer to Problem 3P
A earns total 5 music downloads for practicing 9 weeks.
Explanation of Solution
Given information:
One earns a music download for practicing 120-180 minutes and a pencil for practicing
A’s practices log for 9 weeks are 125,130,115, 95, 80, 175,185, 160 and 110 minutes.
Formula/Concept used:
Just count the log duration that falls in the range from 120 to 180 minutes.
Calculation:
As she practices for 125, 130, 115, 95, 80, 175, 185, 160 and 110 minutes, out of which 125,130,175,185 and 160 minutes fall in range from 120-180 minutes. So there are total 5 such durations which are under 120-180 minutes.
Thus, for each such duration, she earns one music download, that means she earns 5 music downloads.
Chapter 1 Solutions
EP ALGEBRA 1-ETEXT ACCESS
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