You invest $209 to buy shirts and then sell them for $9.50 each.
a. write a function rule to determine your profit.
b. use your rule to find your profit after selling 24 shirts
c. how many shirts do you need to sell to get back your investments?

How long must $542 be invested at a rate of 7% to earn $303.52 in interest? in a easier way

Choose the equation below that represents the line that passes through the point (2, 4) and has a slope of 3. a) y − 4 = 3(x − 2) b) y − 2 = 3(x − 4) c) y + 4 = 3(x + 2) d) y + 2 = 3(x + 4)

Charlie is at an amusement park that has 18 different rides. each ride costs $1.75. the function c(r) = 1.75r represents the total amount of money that charlie will spend if he goes on r rides, but he never goes on the same one more than once. what domain and range are reasonable for the function?