Use a Riemann sum to approximate the area under the graph of f(x) on the given interval, with selected points as specified.f(x) = x2, x = 1 to x = 5, n = 4; use left endpoints
A. 69
B. 41
C. 30
D. 54
Answer: C
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Find the common ratio.2, 6, 18, 54, 162, . . .
A. 
B. 6
C. 3
D. -3
Perform the matrix multiplication.Let A = 
and B = 
. Find AB.
A. 
B. 
C. 
D. 
Give the maximum number of zeros the polynomial function may have. Use Descarte's Rule of Signs to determine how many positive and how many negative zeros it may have.f(x) = x5 - 2.3x4 - 17.7x3 + 28.158x2 + 33.09x - 6.923
A. 5; 3 or 1 positive zeros; 3 or 1 negative zeros B. 5; 2 or 0 positive zeros; 2 or 0 negative zeros C. 5; 2 or 0 positive zeros; 3 or 1 negative zeros D. 5; 3 or 1 positive zeros; 2 or 0 negative zeros
Determine the appropriate rotation formulas to use so that the new equation contains no xy-term.3x2 + 2xy + 3y2 - 8x + 8y = 0
A. x = 
x' - 
y' and y = 
x' + 
y'
B. x = 
(x' - y') and y = 
(x' + y')
C. x = 
x' - 
y' and y = 
x' + 
y'
D. x = -y' and y = x'