What is the equation for this line?

a. 3x - 5y = 15
b. -5x + 3y = -15
c. 5x - 3y = -15
d. 3x - -5y = -15

i selected c, but i want to make sure i'm correct though as i'm not very certain.

In each bouquet of flowers, there are 2 roses and 3 white carnations. complete the table to find how many roses and carnations there are in 2 bouquets of flowers.

If f(x)=2x-6 and g(x)=3x+9, find (f-g)(x)

Over the last 8 nights, elyse earned the following in tips: {105, 120, 84, 95, 100, 132, 140}. if she earns $140 a night for the next four nights, which measure of center would increase more, the mean or median?