Question

In this investigation, you will be solving and interpreting several rate problems. Be sure to show your calculations.

Answer 1

Answer:

#1:

What is Carl’s constant rate of speed (in miles per hour)? 12 mph

How many miles will Carl have traveled after 2 hours? 24 Miles.

#2

What is the slope of this line? -4

What is the value of y when x = 3? y = 22

#3

What is the rate (in dollars per ticket)? 15/1 | $15 per ticket

How much money will the theater earn if it sells 150 tickets? $2250

#4

What does the point (30, 60) mean?  (Hint: What is being graphed on the x-axis? What is being graphed on the y-axis?) (30,60) is equal to x=30 and y=60.

If Karen uses her cell phone for less than 30 hours a month, which company should Karen choose?  Why?

I think that Karen should use Company K because if she uses Company J, there would already be an extra fee of $30 from the monthly payment. Instead, Company K doesn’t  have the monthly payment plan, but the hourly price is two times pricier but cheaper. To make it simple, let’s say Karen use her phone for about 25 hours for the whole month.

Company J: $30 + $25(1) = $55

Company K: 25(2) = $50

Answer 2

1. 12 mph, 24 miles

2. m=4, y=22

3.15/1, $1500

4. x=30 y=60, k cheaper, j cheaper