Dion predicted that he would sell 87 art prints. He actually sold 100 art prints. What are the values of a and b in the table below?
Percent Error
Error
Ratio
Percent error
Item
Art prints
Approximate value
87
Exact value
100
Absolute error
b
a
a=-13, b=-13
a=-13, b=13
.
a = 13,b=-13
a = 13,- 13

Step-by-step explanation:

In this example predicted value is 87 and actual value is 100

Error is 100 - 87 = 13

Absolute error is same, |100 - 87| = 13

So the correct choice is the last one:

6 hours 48 min

step-by-step explanation:

68÷5=13.6

13.6×30=408min=6 hours 48 min.

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