Solve the problem.The following table shows the number of dog collars, in thousands, produced by Allied Pet Products in the 3 years considered. 
Fit a quadratic function f(x) = ax2 + bx + c to the data. What is the value of b?
A. -1.2
B. 1.9
C. 2.3
D. -1.6
Answer: D
Mathematics
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Use scientific notation to solve the problem.A computer can do one calculation in 1.4 x 10-7seconds. How long would it take the computer to do a trillion (1012) calculations?
A. 1.4 x 106 sec B. 1.4 x 1012 sec C. 1.4 x 10-7 sec D. 1.4 x 105 sec
Mathematics
Find the measure of each marked angle.
A. 45° and 135° B. 60° and 120° C. 45° and 55° D. 90° and 270°
Mathematics
Find the probability.A digit is chosen randomly from the digits 0 through 9 and then 7 is added to the digit and the sum recorded. Find the probability that the sum is less than 9.
A. 
B. 
C. 
D. 
Mathematics
Use a calculator to find the approximate value of the expression rounded to two decimal places.sec 
A. 0.98 B. 0.94 C. 1.00 D. 1.04
Mathematics