8. Answer: 0.033 miles per second
<u>Step-by-step explanation:</u>
Determine the coordinates <em>in like units</em> where x is seconds and y is miles, use the slope formula to find the rate of change, then reduce so the denominator is equal to 1.
(30 seconds, 1 mile) and (2.5 minutes, 5 miles)
= (30 seconds, 1 mile) and (150 seconds, 5 miles)
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11. Answer: $10 per week
<u>Step-by-step explanation:</u>
Determine the coordinates <em>in like units </em>where x is weeks and y is total dollars, use the slope formula to find the rate of change, then reduce so the denominator is equal to 1.
(4 weeks, $350) and (9 weeks, $400)
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12. Answer: 300 miles per hour
<u>Step-by-step explanation:</u>
Determine the coordinates <em>in like units </em>where x is hours and y is miles, use the slope formula to find the rate of change, then reduce so the denominator is equal to 1.
(8:00 am, 0 miles) and (1:00 pm, 1500 miles)
= (8 hours, 0 miles) and (13 hours, 1500 miles)