•always use significant figure rules. remember that these rules apply to all numbers that are measurements.
calculate 2 x 10 cm = 2.5 x 10^cm
0.8 x 10-7
8x 10-8
8 x 10

8 x 101

Asocial networking site currently has 400,000 active members, and that figure is predicted to increase by 32% each year. the following expression represents the number of active members on the site after t years.

You have $600,000 saved for retirement. your account earns 5.5% interest. how much, to the nearest dollar, will you be able to pull out each month, if you want to be able to take withdrawals for 20 years?

What is the best way to answer questions with a x expression in the question. for example 3x + 10x=?