Solve the problem. The following data shows the number of housing starts in various years in one beachside community. 
Let f(t) be the number of housing starts at t years since 2009. The data can be modeled by the quadratic model 
. Use the model to predict the number of housing starts in the year 2021.
A. 102
B. 97
C. 104
D. 100
Answer: A
Mathematics
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Give an appropriate answer.Find all points (x, y) at which the tangent plane to the graph 
is horizontal.
A. (4, -1, 42) B. (4, 1, 66) C. (-4, 1, -30) D. (-4, -1, -22)
Mathematics
Solve the problem.An object's acceleration at time t is given by a = 14t, and its initial velocity is 5. Find the object's velocity as a function of time.
A. v = 5t2 + 14 B. v = 7t2 + 5 C. v = 14t2 + 5 D. v = 7t2 + 5t
Mathematics
Write the slope-intercept form of the equation for the line passing through the given pair of points.(3, -4) and (7, -7)
A. y = 
x - 
B. y = 
x - 
C. y = - 
x - 
D. y = - 
x - 
Mathematics
Evaluate the indicated power of i.i9
A. 1 B. -1 C. i D. -i
Mathematics