The sophomore class holds a car wash to raise money. A local merchant donated all of the supplies. A wash cost $5 per car and $6:50 per van or truck. Write an equation in standard form to relate the number of cars and vans or trucks the students must wash to raise $800.

  10c +13v = 1600

Step-by-step explanation:

Let c and v represent the numbers of cars and vans that must be washed. To raise exactly $800, the values of c and v must satisfy ...

  5c + 6.5v = 800

To put this in standard form, we must make the second coefficient an integer. We can do that by multiplying by 2.

  10c +13v = 1600

options a,b,c are the right answer.

step-by-step explanation:

a linear parent function is always represented as y = x

if we write this function in the form of y=mx+c

⇒

or  

now if we plot a graph we will find these characteristics:

1) y intercept of the graph is zero so its a straight line passing through origin.

2) as we can see in both the forms of function written, values of x and y may be either positive or negative for the positive slope means points on the graph are either in first quadrant or in third one.

3) it's slope is one.