Solve the problem.On a recent trip, Sarah's car traveled 20 mph faster on the first 100 miles than it did on the remaining 80 miles. The total time for the trip was 4 hr. Find the speed of Sarah's car on the first part of the trip.
A. 26 mph
B. 36 mph
C. 9 mph
D. 56 mph
Answer: D
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Provide an appropriate response.A pediatric speech therapist started her own practice in 2004. The table below shows the number of children she treated each year from 2004 to 2012. The data is to be aligned to the number of years past 2000 and fitted with a linear model.
Classify each of the following as discrete or continuous.i) The data in the tableii) A scatter plot made from the dataiii) The best-fit linear model obtained for the dataiv) The graph of the best-fit linear model obtained for the data
What will be an ideal response?
Solve.A machinist working on a car's engine mounting drilled a hole 
inch in diameter. She then enlarged the diameter by 0.0047 inch. What was the final diameter? Round to the nearest thousandth if necessary.
A. 0.077 inch B. 0.067 inch C. 0.007 inch D. 0.001 inch
Graph the parabola.
?
?
A. ?
B. ?
C. ?
D. ?
E. ?
Use the graph to find a ? > 0 such that for all x, 0 < 
< ? ? 
< ?.
A. 0.16 B. 4 C. 0.17 D. 0.33