Answer:
Step-by-step explanation:
4. 10x + 30 = 90
10x = 60
x = 6
complementary
5. 4x + 40 + 3x = 180
7x + 40 = 180
7x = 140
x = 20
supplementary
Answer:
$15 + x = $
Step-by-step explanation:
Draw 27 circles and take off 4.5 circles for every hour. The answer will be 6 hrs.
Expression:
-27/-4.5 I believe
If you graph it, it looks linear.