A professor determined the relationship between the time spent studying (in hours) and performance on an exam.

1 answer:

3 0

Step 1: Insert 2.6 hours for the variable of time and solve.
70.443 + 4.885(2.6)
70.443+ 12.701
= 83.144
This is Ann's EXPECTED exam score. Because of the concert, Ann scored 16 points lower than this number.
Step 2: Subtract 16 from Ann's expected score.
83.144 - 16
= 67.144

You might be interested in

HELP<br><br>Graph the solution of the inequality. <br><br>14 ≤ 2t + 18 < 20

yawa3891 [41]

<h2>Greetings!</h2><h3>First when doing an inequality, if you find it easier to think of the ≤ signs as equal signs it can make it look easier. </h3>

14 = 2t + 18 = 20

<h3>Because we need to isolate the t, we need to subtract 18 from either side:</h3>

14 - 18 ≤ 2t + 18 - 18 < 20 - 18

<h3>Which then simplifies to:</h3>

-4 ≤ 2t < 2

<h3>Now, to get the t without two lots of it, we simply divide all sides by two:</h3>

-2 ≤ t < 1

<h3>So this means that t is smaller than one and bigger than or equal to -2, and the graph that shows that is C, because it includes -2 but is less than 1.</h3>
<h2>Hope this helps!</h2>

7 0

4 years ago

Haley read five more than half as many books as her brother did last summer. Haley read seven books

Temka [501]

C because 1/2 of brothers book plus 5 equals 7

4 0

3 years ago

Read 2 more answers

Help me pleaseeeeeeeeeee

galina1969 [7]

Answer:

I'm pretty sure it's a