Answer:
x=5 1/4
Step-by-step explanation:
2 1/4=
--->
divided by 3 to find 1/7x---->
=1/7x---> x=21/4---> x=5 1/4
Answer:
-5= g(a)
Step-by-step explanation:
assuming this is a typo and you meant to say g(-7).
-7 +2 = -5
Answer:

Step-by-step explanation:
we know that


Let
x ------> new battery life
The equation that represent this situation is

convert to mixed number
