Matt and four friends rented five helmets and an atv. the helmets were $4 each and the atv was $17.50 an hour. the total cost was $107.50. solve this system of equation using substitution.

Question

Matt and four friends rented five helmets and an

ATV. The helmets were $4 each and the ATV was

$17.50 an hour. The total cost was $107.50.  

Solve this system of equation using substitution.

Cost = 8 + 3(x-2)

23 = 8 + 3(x-2)

15 = 3(x-2)

5 = x-2

x = 7 hrs -

Hope this helps!

answer: the price of one pound cabbage = $ 0.8

the point (10,8) represents that the cost of 10 pounds cabbage is $ 8

step-by-step explanation:

since, here is a proportional relation between the number of pounds of cabbage (x) and the price in dollars (y).

therefore, we can write,

⇒ y = k x

where k is the constant of proportionality.

now, point (5,4) is in the line.

thus, it will satisfies the above equation of line.

⇒ 4 = 5 k

⇒ k = 0.8

thus, the equation of the line is,

y = 0.8 x

a) for x = 1,

y = 0.8

therefore, the cost of one pound of cabbage is 0.8 dollars.

b) in the below graph (10,8) represents that the cost of 10 pounds of cabbage is 8 dollars.