This is only one equation. It is therefore not a system and you can not solve for two different variables y and z unless you have another equation to solve with. It.
Answer:
8 days
Step-by-step explanation:
4/5= 8/10
2.25 for the first mile. That leaves 4.2 miles.
4 * 0.1 = 0.4
0.15 * 4 = $6.00
0.15 * 2 = 0.3
$6.30 + $2.25 = $8.55
$10.00 - $8.55 = $1.45
The driver's tip was $1.45.
Answer:

Step-by-step explanation: