Ralph sold brownies for $0.27 a piece in order to earn money to buy baseball cards. if the cards cost $0.54 per pack, and if ralph had no money left over after buying them, what is the least number of brownies he must have sold?

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?

Asailor is looking at a kite. if he is looking at the kite at an angle of elevation of 36and the distance from the boat to the point where the kite is directly overhead is 40 feet, how high is the kite?

Find an equation of the line perpendicular to the graph of 28x-7y=9 that passes through the point at (4,1)