Factor the trinomial, or state that the trinomial is prime.x2 - x - 40
A. prime
B. (x + 5)(x - 8)
C. (x - 5)(x + 8)
D. (x - 40)(x + 1)
Answer: A
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Find an equation for the line tangent to the curve at the point defined by the given value of t.x = t, y = 
, t = 18
A. y = 
x
B. y = - 
x - 3
C. y = - 
x
D. y = 
x + 3
Answer the question about the given function.Given the function f(x) = x2 + 4x - 45, list the x-intercepts, if any, of the graph of f.
A. (-9, 0), (1, 0) B. (9, 0), (5, 0) C. (9, 0), (-5, 0) D. (-9, 0), (5, 0)
Find the measures of two angles, one positive and one negative, that are coterminal with the given angle.
A. 
+ 360°, 
- 360°
B. 
, - 
C. 
, - 
D. 
, - 
Use your calculator to approximate the integral using the method indicated, with n = 100. Round your answer to four decimal places.
dx (trapezoidal rule)
A. 147.4106 B. 147.4132 C. 147.4439 D. 148.4132