Answer:
Step-by-step explanation:
Remark
I hope you don't mind if I laughed a little at the graph. The y intercept of the line is at 10 dollars, but the rental car has not moved an inch. I guess they're charging you to look at your driver's license. It's late, and maybe I am a little giddy.
Begin by using a ruler (or some other straight edge) to join all the dots.
a) I'll spend a little time here. It is very important that you know how to read a chart and this question is your first step. The question is how many dollars does it take to go 40 miles? There is a system. Start with the 40 miles on the horizontal axis (x axis if you know that that is).
Use a ruler to go straight up until you hit the line.
- When you hit the line, mark the place.
- Now move straight across until you hit the y axis where you find out the money.
- You should get 30 dollars.
b) This question is a guess.
- You can find the 70 dollars easily enough. Go straight up again until you hit the line.
- Mark the point on the line.
- Go straight across again.
- Not so easy. It isn't marked. You have to make a guess. My guess is 45. What do you think?
c) This question is the exact reverse of the other two.
- This time you start with the amount of money
- So you start at 60 dollars and go straight across until you hit the line.
- Mark the point.
- Now take your ruler and go straight down.
- You should hit 100 miles.
the
complete question in the attached figure
Part A
we know
price poster boards----------- > $0.75
let
p------------- > number of poster boards
q------------- > money spends on poster boards----------> $2.25
q=p*0.75---------> p=q/0.75=2.25/0.75=3
the answer part A is 3
Part B
Let
x-------------- >number of paint brushes------------ > $0.95
y-------------- >number of jar of paint ------------ > $0.99
we know
0.95x+0.99y=4.87
using a graph tool
see the attached figure
the solution is the line shown in the graph
the solution must be a pair of whole numbers, <span>the only pair that meets that condition is the point (2,3)
x=2-------------- ></span>number of paint brushes
y=3-------------- >number of jar of paint
10 to the power of 6, I believe.
1323 rounds to 1320
443 rounds to 440
409 rounds to 410
1320 - (440 + 410) =
1320 - 850 =
470 <=== malcolm has about 470 miles left to go
