It would take two hours and thirty minutes
Answer:
Step-by-step explanation:
I really don’t now but you should keep trying!!!
Answer:

Step-by-step explanation:
Let us revise the properties of exponents
Let us use these properties to solve the question
→ By using the 3rd property above
∵ 
∴ 
→ By using the 1st property above
∵ 
∴ 
→ By using the 2nd property above
∵ 
∴ 
→ By using the 4th property above
∵ 
∴ 