Solve the inequality.x2 - 2x ? 0
A. [-2, 0]
B. (-?, 0] or [2, ?)
C. (-?, -2] or [0, ?)
D. [0, 2]
Answer: D
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The cross-sectional areaC, in square feet, of a river is given by the formula
,
where w is the width of the river and d is the depth. Both of these variables are measured in feet.The flow rate F, in cubic feet per minute, of the river is given by
,
where s is the speed of the river measured in feet per minute. A: Find a formula that gives the flow rate of a river in terms of the variables s, w, and d.B: Use the formula you found in part A to find the flow rate of a river with width 28 feet, a depth of 4 feet, and a speed of 34 feet per minute.
?
What will be an ideal response?
Use the order of operations to simplify the expression.
3?
3
A. 
B. 
C. 
D. 
Draw the graph of the equation.x2 = 5y
A. 
B. 
C. 
D. 
Solve the problem.Since cos 
= - 
and 
is in the interval [0, ?], cos-1
=
A. 
B. 
C. 
D. 