9.1 Review Worksheet (continued)
5. Carl has a severe fever, so his doctor advises him to take his temperature every 4 hours until it falls below 100ºF. The table shows Carl’s temperature with relation to time. Create a graph, an equation, and a verbal description to represent Carl’s temperature with relation to time. When will Carl’s temperature drop below 100°F?
Carl’s Temperature Time (h) Temperature (ºF) 0 101.10 4 102.82 8 103.78 12 103.98 16 103.42 20 102.10
6. A truck begins a trip of 1675 miles. The truck averages 55 miles per hour, including stops. Create a table, a graph, and an equation to represent the distance that the truck has left to travel with relation to time.
7. Researchers are studying the growth of a young blue whale. The graph shows the approximate weight of the whale from birth to 8 months. a. Find an equation for the weight of the whale as a function of time, and describe the relationship in words.
Weight of a Blue Whale from Birth
10 20 30
2
4 6
b. Will the weight of the whale continue to increase by the same amount each month? Explain your answer.
Age (mo)
8. Alex is painting a house. When Alex starts work on Monday morning, there are 2452 square feet of surface area that remain to be painted. Alex can paint 64 square feet of surface area in an hour. a. Write an equation for the amount of surface area that Alex has left to paint after t hours.
b. If Alex works for 40 hours a week, will he be able to finish painting the house in a week?
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