The quantities x and Y are proportional find the constant of proportionality or in the equation of Y = RX​

Which is the graph of f(x) = (4)x? image for option 1 image for option 2 image for option 3 image for option 4

You receive 15% of the profit from a car wash how much money do you receive from a profit of 300

Melanie is buying a bathing suit that costs 39.99. she is given a discount at the cash register of $6.00 when she scratched 15% off on a game piece for a store promotion. what will the sale price of melanie’s bathing suit be?