Concept explainers
The functions
Dry pavement
and
Wet pavement
model a car’s stopping distance,
a Use the given functions to find the stopping distance on dry pavement and the stopping distance on wet pavement for a car traveling at 55 miles per hour. Round to the nearest foot.
b. Based on your answers to part (a), which rectangular coordinate graph shows stopping distances on dry pavement and which shows stopping distances on wet pavement?
c. How well do your answers to part (a) model the actual stopping distances shown in Figure 8.15 on page
d. Determine speeds on wet pavement requiring stopping distances that exceed the length of one and one-half football field, or 540 feet. Round to the nearest mile per hour. How is this shown on the appropriate graph of the models on page
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Intermediate Algebra for College Students (7th Edition)
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