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
<u>Answer (1):</u>
Coefficient of any term means the number multiplied in that term including sign.
is same as
.
Hence required coefficient is 1.
<u>Answer (2):</u>





Hence final answer is 166
<u>Answer (3):</u>



Hence final answer is 
Try this, pls:
When any line on graph is moved to the right, for 'x' must be '-'.
When one is moved down, for 'y' must be '-'.
Finaly: y=4(x-5)²-18.
Answer: A.
Acute angle. If angle b is obtuse then it has to be more than 90 but less than 180. So the only other angle that could be paired with it to make a linear pair would be an acute angle.