Simplify.7z - (20 - 4z)
A. 3z - 20
B. 11z + 20
C. 11z - 20
D. 3z + 20
Answer: C
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The area of a triangle can be derived from the area of a kite in which of the following ways??
A.
?Half of the width of a kite × 1/2 × the length of the kite = the area of the triangle.
B.
?Twice the area of one of the congruent triangles equals the area of the kite.
C.
?They have the same formula: 
, and thus must be the same shape.
D.
?a and b are true.
E.
?None are true.
Interpret the meaning of the slope and the y-intercept of the equation in terms of the conditions stated in the problem.The cost, in dollars, of a one-day car rental is given by 
where x is the number of miles driven.
A. $30 is the cost per day to rent the car and $0.16 is the cost per mile. B. $0.16 is the cost per day to rent the car and $30 is the cost per mile. C. $16 is the cost per day to rent the car and $0.30 is the cost per mile. D. $30 is the cost per day to rent the car and $16 is the extra cost for unlimited miles.
Express the area of the region bounded by the given line(s) and/or curve(s) as an iterated double integral.The curve 
and the lines 
and 
A. 
B. 
C. 
D. 
Find the value(s) of the variable for which the rational expression is undefined.
A. -7 B. 0 C. none D. 17