Math nation Geometry Section 5 CYU lesson 1. Plz help I really need to turn it in quickly.

Imogene invested $8,000 in a bank account that pays 8 percent simple interest at the end of each year. her friend invested the same amount in stocks where the growth of the investment is represented as 2,000 times the square root of 2 less than the time lapsed in years. if y1 and y2 represent the amount earned in dollars and t is the time lapsed in years, which system of equations correctly represents the situation?

45 was divided by a power of ten to get 4.5. what power of ten was it divided by? people 4.5

Which of the following pair(s) of circles have las a common external tangent? select all that apply. a and b a and c b and c