Brenda designed a can with the largest possible volume given that its lateral surface area is 144 pi sq cm for whole number values of radius and height. What is the volume of a can in cubic cm with half the radius and height? (leave your answer in terms of pi, for example 100 pi)

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?

Nine more than four times a number is the same as one less than twice the number. find the number?

Candy lives in the center of town. her friend darlene lives 28 miles to the east and her friend dana lives 21 miles north. approximately how far do dana and darline live apart ?