Solve by completing the square.3x2 - 18x + 42 = 0
A. -3 - i
B. 3 + i
, 3 - i
C. 3 + i
, -3 - i
D. 3+ i
Answer: B
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Find the intervals on which the function is increasing and the intervals on which the function is decreasing.f(x) = - 
x2 + 9x - 8
A. Increasing on 
; decreasing on 
B. Increasing on 
; decreasing on 
C. Increasing on 
; decreasing on 
D. Increasing on 
; decreasing on 
Consider the initial value problem. Find the approximations of y(0.2) and y(0.4) using Euler's method with a time step of 
Then using the exact solution given, compute the errors in the Euler approximations at 
and 
Round answers to five decimal places, do not use intermediate rounding.y'(t) = 3 - y, y(0) = 2; y(t) = 3 - e-t
A. 
; 
B. 
; 
C. 
; 
D. 
; 
Express the percent as a decimal.67%
A. 0.067 B. 0.67 C. 6.7 D. 67.0
Graph the function.y = csc 
A. 
B. 
C. 
D. 