Answer:
See below.
Step-by-step explanation:
The cost of the taxi is the sum of two costs:
<em>the fixed fee of $3.00</em> and <em>the $0.50 per mile</em>.
Let x = number of miles.
For x miles, the mile cost is 0.5x
The total cost is $3.00 plus 0.5x
Total cost: 0.5x + 3
We want the total cost to be under $10, so the sum of the two costs must be less than 10.
The inequality is:
0.5x + 3 < 10
Subtract 3 from both sides.
0.5x < 7
Divide both sides by 0.5
x < 14
The cost is under $10 if the distance is under 14 miles.
Since the distance here is 15 miles, the cost of the taxi is over $10, and Carl will take the bus.