Triangle ABC is a right triangle with sides of lengths a, b, and c and a right angle at C. Find the indicated trigonometric function value of A. Rationalize denominators containing radicals.a = 9, c = 
; find tan A.
A. 
B. 
C. 
D. 
Answer: B
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Solve the problem.Show that g(x) = 
is an increasing function of x.
What will be an ideal response?
Determine whether the following is an expression or an equation. If it is an expression, simplify if possible and evaluate it for x = 2. If it is an equation, solve it.
+ 
A. Expression; 1; 2 B. Equation; 0 C. Expression; 1; 1 D. Equation; 1
Solve the problem.The table shows the number of deaths due to car accidents in a certain city in various years. 
Let n = f(t) be the number of deaths due to car accidents at t years since 2012. Find a quadratic equation for f in vertex form. Use the data for the year 2015 as the vertex and use the data for the year 2017 to find the value of a.
A. f(t) = -4.25(t - 3)2 + 202 B. f(t) = -12.75(t - 3)2 + 270 C. f(t) = -2.04(t - 3)2 + 270 D. f(t) = 4.25(t - 3)2 + 202
Find the quadratic function y = f(x) that has the given vertex and whose graph passes through the given point.vertex (-7, 0); passing through (-4, -3)
A. y = (x - 7)2
B. y = - 
(x - 7)2
C. y = - 
(x + 7)2
D. y = (x + 7)2