1. Titus has collected a set of data and calculated the median to be 29. The set contains 75 numbers, but Titus gets an email telling him to add the following 6 numbers to his data: 23, 26, 26, 30, 33, 40

What is the new median for his data?

A) 28

B) 29

C) 30

D) 31

2. On Chatty Cathy’s cell phone plan she pays for minutes used plus a fixed monthly charge. For 500 minutes she pays $35 total, and for 1500 minutes used she pays $55 total. What is her monthly fixed charge?

A) $15

B) $20

C) $25

D) $30

Jaleco Oct 23, 2018

#2

#3**+3 **

Nice, tertre !!!

Here is the second one.....

Let F be the fixed charge and M be the cost per minute of use

So...we have these equations

500M + F = 35

1500M + F = 55

Subtract the first equation from the second and we get that

1000M = 20 divide both sides by 1000

M = 20 / 1000 = 2 / 100 = 2 cents per minute

So...using either equation to determine F, we have

500 (,02) + F = 35

10 + F = 35 subtract 10 from each side

F = 25 (dollars)

CPhill
Oct 24, 2018