i think its twenty hours.....but dont take my word on it im not 100% on it
Answer:
B
Step-by-step explanation:
since 5 is constant so you can take it out from the summation
Answer:

Step-by-step explanation:
Given

Required
Solve
We have

Using a calculator

Approximate

Answer:
While Solving a proportion problem you multiply the x and the numerator or denominator. (Diagonal from the x)
Step-by-step explanation: