The employees in an insurance company's mailroom are responsible for sorting and delivering the incoming U. S. mail to the correct departments. These employees have been receiving numerous complaints that mail is being delivering to the wrong departments. To better understand these complaints, the mailroom employees recorded the number of these complaints they received each day for the last 20 working days (Monday through Friday for the last 4 weeks). The data, in the order of the last 20 working days, is given below. Week 1 Week 2 Week 3 Week 4 Monday 13 Monday 12 Monday 12 Monday 12 Tuesday 5 Tuesday 6 Tuesday 5 Tuesday 4 Wednesday 14 Wednesday 12 Wednesday 12 Wednesday 9 Thursday 11 Thursday 11 Thursday 9 Thursday 15 Friday 9 Friday 15 Friday 10 Friday 9 Plot these data on a run chart. What conclusion can you make about the number of complaints received over the last 4 weeks?

f(x) has value 150 at x= 0

and 0 at x= 3

so d(f(x))/dt = slope = -150/3 = -50

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step-by-step explanation:

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2 & 7

step-by-step explanation:

he climbs 300 ft/hr at a constant rate. the peak is at 1,500 ft.

when going up, he reaches 600 ft in 2 hours. remember, that he is going in a constant rate. divide 600 with 300:

600/300 = 2

assuming that he takes the same route back (meaning that it's a 1500 ft route back, you can solve.

note also that you are solving when he gets back to 600 ft after he reaches the peak.

first, find the amount of hours it takes to get up the peak. divide the total amount (1500), with the ft/her (300) to get the amount of hours (x):

1500/300 = x

x = 5

it takes jamie 5 hours to get up. now, he is returning down, and reaches 600 (his current destination). remember that he climbs at a constant 300 ft/hr. divide 600 with 300:

600/300 = x

x = 2

now add the two numbers together.

x = 5 + 2 = 7

jamie takes 7 hours to go up the mountain and reach his current position when descending.

(total amount/constant rate) = (time).

remember that it is a constant rate, so in total, when he gets back down the mountain, it will take the same amount of time as when he goes up. the total amount for the round trip is: 5 + 5 = 10.

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