I believe it will be 1.75
Hope this helps!
Answer:

Step-by-step explanation:
we know that


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

convert to mixed number

Answer:
Hope it helps
Step-by-step explanation:
1: B
2: B
3: D
4: C
5: A
Answer:
Domain is 0 to 50.
Step-by-step explanation:

To determine the minimum of an equation, we derive the <span>equation using differential calculus twice (or simply </span><span>take the second derivative of the function). If the </span><span>second derivative is greater than 0, then it is minimum; </span><span>else, if it is less than 1, the function contains the </span><span>maximum. If the second derivative is zero, then the </span><span>inflection point </span><span>is</span><span> identified.</span>