Allison swims a total of 13 kilometers each week. What is the total number of meters she swims in 3 weeks?

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?

Lola says these two expressions have the same value. expression a expression b which explains whether lola is correct?

The difference of two numbers is 40. find the numbers if 0.3 parts of one number is equal to 37.5% of the other one.