Question

can you please solve this please i reallt need this to be right please because i don't get it

Answer 1

Step-by-step explanation:

6) From the graph we can see that the the graph is linear

so we can represent the graph with the equation of a line...

So the slope of the line is

(y2-y1)/(x2-x1)

=(100-75)/(2-1)

=25

And this is the cost per person.

so the equation would be

y=25x + c

so, from the graph we can say that y=c=75-25=50

by subtracting 25 from y when x=1

so we get,

f(x)=25x+50

=25(x+2)

so, f(8)=25(8+2)

=25*10

=250

this also represent the cost of 8 persons.

similarly, we have to solve all the problems by this method:

7) slope

=(35-20)/(2-1)

=15

and c=20-15

=5

so,

f(x)=15x + 5

=5(x+3)

so, f(12)=5(12+3)

=5*15

=75

this represents the number of autograph collected by Ed in 12 weeks

8)now here, we can find that the value of f(x) is decreasing with the increase in value of x so, slope would be negative

slope=(280-300)/(2-1)

=-20

so, c=300-(-20)

=300+20

=320

so, we get f(x)=-20x+320

=20(16-x)

so, f(10)=20(16-10)

=20*6

=120

this represents the points left when Bob has travelled 10 weeks.

hope this helps you. please mark my answer as the brainliest.