A cab company calculates cab fares using the expression 1.50d + 3, where d is the distance traveled in miles. If a passenger has

Question

3 years ago

9

to pay a $21 fare for a ride, which number from the set {9, 12, 15, 18} is the value of d?

2 answers:

Arisa [49] · Answer 1 · 2022-05-09T17:07:43+03:00

Arisa [49]3 years ago

4 0

1.50d+3=$21
1.50d=18
d=12
1.50(12)+3=21

prohojiy [21] · Answer 2 · 2022-05-09T19:00:59+03:00

Answer:

12

Step-by-step explanation:

Given : A cab company calculates cab fares using the expression 1.50d + 3, where d is the distance traveled in miles.

To Find: If a passenger has to pay a $21 fare for a ride, which number from the set {9, 12, 15, 18} is the value of d?

Solution:

Cab fare Expression : $1.50d + 3$

Where d is the distance traveled in miles.

Now we are given that a passenger has to pay a $21 fare for a ride

So, $21=1.50d + 3$

$21-3=1.50d$

$18=1.50d$

$\frac{18}{1.50}=d$

$12=d$

Thus the value of d is 12 .