Astock of food is enough to feed 50persons for14 days. how many dys will the food last if 50 mure persons will be aadded?

answer:

h(-1)

=

−

3

h(2)

=

12

average rate of change

=

12

−

(

−

3

)

2

−

(

−

1

)

=

15

3

=

5

step-by-step explanation:

first values for f(-1) and f(2) should be found.

h(-1)

=

(

−

1

)

2

+

4

(

−

1

)

=

1

−

4

=

−

3

h(2)

=

2

2

+

4

(

2

)

=

4

+

8

=

12

then the formula below can be filled in accordingly.

average rate of change

=

δ

f

(

x

)

δ

x

=

f

(

2

)

−

f

(

−

1

)

2

−

(

−

1

)

=

12

−

(

−

3

)

3

=

15

3

=

5