Answer:
Step-by-step explanation:
t = tutoring and g = grocery store
t + g = 15......t = 15 - g
15t + 9g = 159
15(15 - g) + 9g = 159
225 - 15g + 9g = 159
-15g + 9g = 159 - 225
-6g = - 66
g = -66/-6
g = 11 <===== 11 hrs worked at the grocery store
t + g = 15
t + 11 = 15
t = 15 - 11
t = 4.....4 hrs tutoring
Answer:
12
Step-by-step explanation:
12/2=6
Tell me if it works
Look at steps 2 and 3. Steps 4 and 5 have the same two reasons.
-axis (washer method):
-axis (shell method):
(shell method):
(washer method):