Mel makes and sells pet treats at a local pet fair. He earns $6.25 for each bag of treats he sells. He wants to sell enough treats to buy a doghouse for $240. A. Write an equation that represents the number of bags of treats Mel must sell to earn $240. B. Solve the equation. Be sure to show your work. C. Evaluate the reasonableness of your answer and write a sentence that explains the number of bags of dog treats Mel must sell.

A.)  

240/6.25=d

B.)

Mel would have to sell 39 bags

This is because if we divide 240 by 6.25 we get 38.4

We can not sell .4 bags, so we have to round up

So we have to sell 39 bags

Mel will also have 3.75 dollars left over

C.)

My answer is reasonable. Mel will have to sell 39 bags of dog treats. Since he wants to get 240 dollars, then he must earn 240 dollars. He earns 6.25 per bag. So you need to find out how many bags he needs to sell. To do this, you divide the amount of dollars by the amount you are selling the bags for. So 240 divided by 6.25. To check, you could times 6.25 by 39 and make sure that it i over 240 dollars.

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step-by-step explanation:

(0,-3) see attached graph

step-by-step explanation:

a. to solve the system, graph the two equations.

x = y+3 becomes y=x-3 has m=1/1 and b=-3. start at (0,-3) on the y-axis and plot a point. then move up 1 unit and 1 unit to the right. plot a point and connect.

y=-4x+3 has m =-4/1 and b=-3. start at (0,-3) on the y-axis and plot a point. then move down four units and to the right 1 unit. plot a point and connect.

the solution is the point (x,y) where the two lines intersect. by the graph below it is (0,-3).

b. to solve by substitution, substitute y = -4x-3 into x= y+3

x= (-4x-3) +3

x=-4x

5x=0

x=0

now substitute x = 0 back in to find y.

y= -4(0)-3

y=0-3

y=-3

solution is (0,-3)

c. use elimination by adding the equations together.

x-y=3

4x+y=-3

5x=0

x=0

then substitute into one equation to find y.

y=-4(0)-3

y=-3