Evaluate the expression.16-3/4
A. -6
B. 
C. -8
D. 
Answer: B
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The following table shows the rate R, in accidents per hundred million miles, of accidents versus the speed s, in miles per hour. The data refers to urban streets at night. s 20 25 30 35 40 45 R 1600 700 250 300 700 1300? A: Use quadratic regression to model the accident rate as a function of the speed. Round your answers to two decimal places, if necessary.B: Plot the data along with the graph of the model you found in part A.C: According to the model you found, what is the safest speed to drive on urban streets at night? Round your answer to two decimal places.
What will be an ideal response?
Use the addition property of equality to solve the equation.-21 = n - 5
A. 26 B. -26 C. 16 D. -16
Solve the problem.Given that the polar equation r = a(1 - e2)/(1 + e cos ?) models the orbits of the planets, estimate the closest approach of Pluto's orbit, for which 
and 
to the sun.
A. About 50 astronomical units B. About 39 astronomical units C. About 74 astronomical units D. About 30 astronomical units
Find the quotient.
A. 9 B. 1.9 C. 0.9 D. 19