Solve the following simultaneous equations using the addition/subtraction method.
2x + y = 6
x + 2y = 3
x = 3
y = 0
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Solve the problem.The formula s = 16t2 models the distance, s, in feet, that an object falls in t seconds. Find the number of seconds a sky diver is in free fall after jumping from a plane and falling 816 feet before opening a parachute. Express your answer in simplified radical form.
A. 51 seconds
B. 16
seconds
C. 
seconds
D. 204 seconds
Complete the square for the binomial. Then factor the resulting perfect square trinomial.x2 + 
x
A. x2 + 
x + 144 = (x + 12)2
B. x2 + 
x + 
= 
2
C. x2 + 
x + 
= 
2
D. x2 + 
x + 
= 
2
A point lying on the terminal side of angle ? is given. Find the exact value of the indicated trigonometric function of ?.(-7, 8) Find tan ?.
A. - 
B. - 
C. - 
D. 
Suppose the point (2, 4) is on the graph of y = f(x). Find a point on the graph of the given function.y = f(x + 1)
A. (2, 3) B. (2, 5) C. (3, 4) D. (1, 4)