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After 5 tests, her average was 88. To have a seven-test average of 90, the total must be:
Her average after 5 tests was 88. Her total score on the 5 tests is:
Subtract:
Find the average by dividing by 2:
Her average must be 95
<h2>The Domain and Range of a Set of Ordered Pairs</h2><h3>Answer:</h3>
Domain:
Range:
We are given the set of ordered pairs: . The Domain is just the set containing all the
values of each ordered pair of
. Recall that in the ordered pair
,
is the
value. In set
, we can see that the
values are
.
For the Range, it is just the set containing all the values of each ordered pair of
. Recall that in the ordered pair
,
is the
value. In set
, we can see that the
values are
.