The total cost of a jacket and a sweater was $77.54. if the price of the jacket was $3.98 less than the sweater, what was the price of the jacket ?

Can someone pls ! pls answer all. no explanation needed..

Write the rational number in lowest terms 99/-15

Suppose that prices of a gallon of milk at various stores in one town have a mean of $3.71 with a standard deviation of $0.10. using chebyshev's theorem, what is the minimum percentage of stores that sell a gallon of milk for between $3.41 and $4.01? round your answer to one decimal place.