Chapter 8 Review

QuizÂ by Heather Offermann

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12 questions

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- Q1If Jerry earns $100 per hour, name the quantity that is constant.hours workedhoursamount earned$100/hour rate30s
- Q2If Jerry earns $100 per hour, which quantity depends on the other?Earnings depends on timeTime depends on earningsRate depends on timeEarnings depends on $100 rate30s
- Q3Which equation represents Jerry earning $100 per hour?t=100ee=100t100te=t/10030s
- Q4If Jerry earns $100 per hour, how much will he earn if he works 15.5 hours?e=1,550He earns $1,550.He earns $115.50.1,55030s
- Q5Sally joined LA Fitness at a rate of $100 the first month and $50 each additional month. Which equation represents the amount she will be charged? Let c = total cost in dollars and m = time in months.c = 50m + 100c = 100 + 50(m - 1)c = 100 + 50mc = 150m30s
- Q6Given the points A (1, 16), B (2, 12), and C (3, 8) calculate the unit rate of change.4-4+41245s
- Q7Solve 42 = 1/5 x +12x = 6x = 270x = 198x = 15060s
- Q8Solve 2 (4x - 8) +2x = 24x = 4/5 or 0.8x = 5x = 4x = 3 1/3 or 3.333360s
- Q9Bob is landing his glider. He is at 8,750 feet and beginning his descent. He descends at a rate of 350 feet per minute. Identify the Dependent and Independent Variables:IV: t = time in minutes & DV: h = height in feetIV: f = feet & DV: m = minutesIV: height in feet & DV: time in minutesIV: h = height in feet & DV: t = time in minutes45s
- Q10Bob is landing his glider. He is at 8,750 feet and beginning his descent. He descends at a rate of 350 feet per minute. Which equation represents Bob's situation?h = 8,750t8,750 - 350t8,750 = - 350th = 8,750 - 350t45s
- Q11Bob is landing his glider. He is at 8,750 feet and beginning his descent. He descends at a rate of 350 feet per minute. How long will it take the glider land?25 feet8,400 minutes25 minutes8,400 feet60s
- Q12Bob is landing his glider. He is at 8,750 feet and beginning his descent. He descends at a rate of 350 feet per minute. At what time will the glider be at an altitude of 7,350 feet?4 feet21 feet4 minutes21 minutes60s