Solve the problem.The table shows the number of deaths due to car accidents in a certain city in various years. 
Let f(t) be the number of deaths due to car accidents at t years since 2012. Use a quadratic model to predict the number of deaths due to car accidents in the year 2020. (First find a quadratic equation for f in vertex form by using the data for the years 2015 and 2017).
A. 86
B. 76
C. 94
D. 112
Answer: B
Mathematics
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Solve by completing the square to obtain exact solutions.10x2 + 27x + 18 = 0
A. 
, 
B. - 
, - 
C. - 
, - 
D. 
, 
Mathematics
Find the following.If v = 
, find 
.
A. 74
B. 
C. -12
D. 2
Mathematics
Solve the problem.The sum of the squares of the digits of a positive two-digit number is 61, and the tens digit is 1 more than the units digit. Find the number.
A. 65 B. 54 C. 45 D. 56
Mathematics
The graph of f(x) = ax2 + bx + c is given in the figure. Solve the equation 
A. 0, -8 B. 8 C. 0 D. -8
Mathematics