Metro taxi fare
first 1/5 mile $0.75
each additional 1/5 mile $0.55
each additional passenger $1.50
1.) compute the fare without tip: 4 passengers, 11.8 mi.
choices:
$34.20
$35.10
$36.20
$37.15
2.) compute the fare with 15% tip: 2 passengers, 5.8 miles
choices:
$17.65
$20.30
$19.34
$18.62

1.

4 passengers in total so additional passenger is 3 = .

Since fare is broken down into parts, we need to figure out how many of these parts are there in 11.8 miles.

There are parts.

First mile is $0.75

Remaining 59 - 1 = 58 parts are worth $0.55 each. So total is dollars.

Grand total with 4 passengers and 11.8 miles is dollars.

Fourth choice is correct.

2.

2 passengers in total so additional passenger is 1 = .

Like before, how many parts are ther in 5.8 miles?

parts

First mile is $0.75

Remaining 29 - 1 = 28 parts are worth $0.55 each. So total is dollars.

Now, the Total is .

There is a 15% additional tip to that.

dollars is the tip.

Grand total with 2 passengers, 5.8 miles, and 15% tip is dollars.

Second choice is correct.

1. $37.15

2. $20.30

a 4/6 = 9/12   not proportional

step-by-step explanation:

to find which are not proportional, we can use cross products

if it is true, they are proportional.   if it is not true, they are not proportional.

a 4/6 = 9/12

4* 12 = 6*9

48 = 54

not this is not proportional  

b 2/3 = 12/18  

2* 18 = 3 * 12

36 = 36

this is proportional

c 5/4 = 10/8  

5*8 = 4*10

40 = 40

this is proportional

d 7/5 = 35/25

7*25 = 5 * 35

175 = 175

is proportional