Question

The accompanying graph shows all of the possibilities for the number of refrigerators and the number of TVs that will fit into an 18-wheeler.
a) Write an inequality to describe this region.
b) Will the truck hold 71 refrigerators and 118 TVs?

Answer 1

Please help me out at least with the first point !

Answer 2

@nikato

Answer 3

Please help me out

Answer 4

I think i just need to figuere out the inequality

Answer 5

the rest seems easier

Answer 6

Just ignore the inequality part for now.
Can you just find the equation of that line?

Answer 7

x + y = ?? when x = 0 --> y = 330
when y = 0 --> x =110

Answer 8

i don't know how to put togheter everything

Answer 9

Ok. Lets start with finding the slope.

Do you know how to find the slope of the line

Answer 10

is it -3/1 ?

Answer 11

y = -3x + b

Answer 12

Correct.
And you should know b. it's the y intercept of the graph

Answer 13

y = mx + b
y = -3x + b

Answer 14

p1 ( 0 . 330) --> 330 = -3 (0) + b

Answer 15

b = 330

Answer 16

y = -3x + 330 ?

Answer 17

3x + y < = 330 ?

Answer 18

Correct.

Answer 19

if is right, now what do i have to do ?

Answer 20

That would be your solution for a

Answer 21

For b,
Plug in 71 for x and 118 for y and see if the inequality is still true

Answer 22

now for b: 3 (118 ) + 71 <= 330

Answer 23

false

Answer 24

Correct

Answer 25

 The Burbank Buy More store is going to make an order which will include, at most, 60 refrigerators. What is the maximum number of TVs that could also be delivered on the same 18-wheeler? Be sure to show all your work and how you came to that conclusion.

Answer 26

PLEAse guide me with this las example, with this ill get it all

Answer 27

3x + 60 <=330

Answer 28

solve for x ?

Answer 29

No plug 60 for x and solve for y.

The x is refrigerator and y is tv if you look at your graph.

Answer 30

man im so gratefull you rock with maths, thanks a million times!

Answer 31

No problem. You're a quick learner too