If 60 equally priced downloads cost x dollars, then how much do 9 downloads cost?

If 15 chains cost Rs120, then how much do 70 chains cost ?

if t ties cost d dollars, how many dollars would t+1 ties cost?

If 6 books ₹ 615, how much do 10 books cost ?

If 5 cans of soup cost $1.95, how much do 3 cans of soup cost?

If three apples cost ₹ 45, how much would five apples cost ?

Five pens cost Rs 115. How much will 7 pens cost ?

Tim bought a skateboard and two helmets for total of d dollars. If the skateboard costs s dollars, the cost of each helmet could be represents by which of the following expression?

A musician has a new song available for downloading or streaming. The musician earns $0.09 each time the song is downloaded and $0.002 each time the song is streamed. Which of the following expressions represents the amount, in dollars, that the musician earns if the song is downloaded d times and streamed s times?