Victor works at a shoe store. His salary is $300 a week plus 10% commission on any shoes he helps sell. how many pairs of shoes does he need to sell if he wants to make at least $400 this week?

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?

Solve this system of equations. 12x − 18y = 27 4x − 6y = 10

What is the simplified form of (3.25x10^3)(7.8x10^6) written in scientific notation?