If a total amount is $1.69 and 24 cookies were made, how much will per cookie cost?

On a architect's drawing of a house, 1 inche representa 1.5

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

Barbara deposited $300 in the bank. if the bank pays her simple interest at the rate of 4 percent per year, how much money will she have in her account at the end of 9 months?