Approximate the area under the curve and above the x-axis using n rectangles. Let the height of each rectangle be given by the value of the function at the right side of the rectangle.f(x) = x2 - 3x + 4 from x = 1 to x = 5; n = 4
A. 48
B. 28
C. 38
D. 18
Answer: B
Mathematics
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Write the sum without sigma notation and evaluate it.
A. 
+ 
+ 
= 
B. 
+ 
+ 
= 9
C. 
+ 
= 
D. 
? 
? 
= 4
Mathematics
For the quadratic function, tell whether the graph opens up or down and whether the graph is wider, narrower, or the same shape as the graph of 
f(x) = x2 + 2
A. Down; same B. Up; narrower C. Up; wider D. Up; same
Mathematics
The given function is one-to-one. Find f-1(x).f(x) = 
A. f-1(x) = 
B. f-1(x) = 
C. f-1(x) = 
D. f-1(x) = 
Mathematics
Perform the indicated operations.(13 + p)2
A. 169p2 + 26p + 169 B. p2 + 26p + 169 C. p + 169 D. p2 + 169
Mathematics