Answer:

Step-by-step explanation:
we know that


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

convert to mixed number

If you can use a calculator, enter (4/1/4)/(4/1/2) and you will get 1/2
I have summer school work too omg!!! it’s annoying
Answer:
150.72
Step-by-step explanation:
3² × 3.14 × 6 - 1² × 3.14 × 6 = (3² - 1²) × 3.14 × 6 = 150.72
14 3/5 as a decimal would be 14.6