Use the imaginary unit to write the expression.
A. ±2
B. -2i
C. 2i
D. -i
Answer: C
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Find a formula for the nth term of the sequence.2, -2, 2, -2, 2 (2's with alternating signs)
A. an = 2(-1)n B. an = 2(-1)2n+1 C. an = 2(-1)2n-1 D. an = 2(-1)n+1
Find the slope of a line tangent to the curve of the given equation at the given point.y = 
; (4, 32)
A. 64 B. 4 C. 8 D. 24
Graph the radical function. Compare the graph to that of the square root function or cube root function.G(x) = 
A. It looks like the graph of the square root
function, but it is shifted 4 units to the right.
B. It looks like the graph of the square root
function, but it is shifted 4 units down.
C. It looks like the graph of the square root
function, but it is shifted 4 units to the left.
D. It looks like the graph of the square root
function, but it is shifted 4 units up.
Find all values that make the rational expression undefined. If the rational expression is defined for all real numbers, so state.
A. x = 0 B. x = -2 C. x = 2 D. Defined for all real numbers