Choose the function that represents the data in the table.
1 answer:
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<span>You have jogged 5 miles from the park at a rate of r miles per hour. On your way back to the park your average speed increases by 1 mile per hour.
a. Write an expression for the time t (in hours) it takes to jog 5 miles
from the park as a function of your average speed r (in miles per hour) ___________
</span>
<span>
b. When you run back to the park, your average speed increases by 1 mph.
Write an expression representing your new speed. ___________
</span>
<span>
c. Write an expression for the time t(in hours) it takes to jog 5 miles
back to the park. ___________
</span>
<span>
d. Use your answers to parts a and c to write an expression that gives the total jogging time T (in hours) as a function of your average speed r (in miles per hour) when you are jogging away from the park. Write your answer as a single rational expression.
</span>
<span>
e. Find the total jogging time if you jogged away from the park at an average speed (r) of 4 miles per hour. Round your answer to the nearest tenth.
</span>
hours or 135 minutes
2.3 hours rounded I suppose.
a. Write an expression for the time t (in hours) it takes to jog 5 miles
from the park as a function of your average speed r (in miles per hour) ___________
</span>
<span>
b. When you run back to the park, your average speed increases by 1 mph.
Write an expression representing your new speed. ___________
</span>
<span>
c. Write an expression for the time t(in hours) it takes to jog 5 miles
back to the park. ___________
</span>
<span>
d. Use your answers to parts a and c to write an expression that gives the total jogging time T (in hours) as a function of your average speed r (in miles per hour) when you are jogging away from the park. Write your answer as a single rational expression.
</span>
e. Find the total jogging time if you jogged away from the park at an average speed (r) of 4 miles per hour. Round your answer to the nearest tenth.
</span>
2.3 hours rounded I suppose.