exam Maths Puzzle Numerical Ability

A cell divides into two identical copies every 4 minutes. How many cells will exist after 3 hours?

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exam Other Question

Simplify

4(-1) 4th power
I am struggling with this word problem, I would like some help on how to complete these type of problems. Here is the problem: If 4 times an interger is increased by 3, the result is between 13 and 25. What is the interger? Please help me. Thank you