Let the score on her seventh test be "x".
SO,

∴ He must get 104% on his seventh test to get an average score of 90%
Answer:
apples= 15
oranges = 12
Step-by-step explanation:
5+4=9
27/9=3
therefore
apples=3*5=15
oranges=4*3=12
Supplementary angles will always add up to 180. If you had a straight line, and you drew another line across that line, the two angles on either side of that line would add up to 180 because a flat line is equal to 180 degrees.