Meters and seconds.
Most short distance races involve meters and the timing is usually in seconds. She can use the information and convert it to miles per hour.
Answer:
= 4096
Step-by-step explanation:
Rules:
Given that,
3x-y =12
Therefore

[ since
]
[ applying 3rd rule]
[ applying 2nd rule]
[ since 3x-y =12]
=4096
Given:
Profit = 372.60 + 17.2(advertising dollars)
Advertising dollars = 1,020
profit = 17,500
17,500 + residual value = 372.60 + 17.2(1,020)
17,500 + residual value = 372.60 + 17,544
17,500 + residual value = 17,916.60
residual value = 17,916.60 - 17,500
residual value = 416.60
residual value is 416.60 or 417 rounded off to the nearest integer
16 would be the range. The lowest value is 5, and the highest value is 21. You just subtract those two which gives you 16! (: