Everyday on her way home from school, minnie usea $1 to buy a bag of chips. the bag cost $0.75, and she saves the remaining quarter in her change jar. minnie buys 5 bags of chips per week. at this rate, how long will it take her to save $10.00

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?

Sum is 17 and their difference is 3

If cos(2x) = tan^2(y), show that cos(2y) = tan^2(x).