The function gives the cost to manufacture xitems. c(x) = 10,000 + 90x + 1200/x ; x=100find the average cost per unit of manufacturing h more items (i. e., the average rate of change of the total cost) at a production level of x, where xis as indicated and h = 10 and 1.

(use smaller values of h to check your estimates.)

(round your answers to two decimal places.)

89.89 and 89.88

Step-by-step explanation:

Given function,

Where,

x = number of units manufactured,

Here, x = 100,

if h more items are produced then new number of units = 100 + h,

i.e. number of units ∈ [ 100, 100 + h]

If h = 10,

The number of units ∈ [100, 110],

Then the average cost per unit of manufacturing,

≈ 89.89

If h = 1,

The number of units ∈ [100, 101],

Then the average cost per unit of manufacturing,

≈ 89.88

step-by-step explanation:

given perimeter: 28cm

length: 9cm

atp,

2(l+w)=p of the reactangle

2(9+x)=28

18+2x=28

2x=28-18

x=10/2

x=5

therefore width is 5 cm

30 miles

step-by-step explanation:

we know that 60 seconds equals 1 minute and 60 minutes 1 hour

44 ft       60 sec     60 min     158400   ft

  *   *   =

1 sec       1 min       1 hour         hour

we know that there are 5280 ft per mile

158400   ft       1 mile         30 miles

  *   =

1   hour               5280 ft     1 hour

so in 1 hour   it can travel 30 miles