Solve the problem.The recipe for a chocolate chip cake calls for 
pound of chocolate chips. If a bakery wants to make 20 cakes, how many pounds of chocolate chips will they need?
A. 20 pounds
B. 5 pounds
C. 16 pounds
D. 4 pounds
Answer: C
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Graph the parabola or ellipse. Include the directrix that corresponds to the focus at the origin.r = 
A. 
B. 
C. 
D. 
Parametric equations and a value for the parameter t are given. Find the coordinates of the point on the plane curve described by the parametric equations corresponding to the given value of t.x = t3 + 3, y = 9 - t4; t = 2
A. (17, -13) B. (11, -7) C. (11, 25) D. (17, 1)
The flow of blood through an arteriole in cubic centimeters per second is given by
?
?
where l is the length (in cm) of the arteriole, r is its radius (in cm), p is the difference in pressure between the two ends of the arteriole (in dyne/cm2), and k is the viscosity of blood (in dyne-sec/cm2). Find the approximate percentage change in the flow of blood if an error of 4% is made in measuring the length of the arteriole and an error of 3% is made in measuring its radius. Assume that p and k are constant.
?
A. 
B. ?
C. ?
D. ?
E. ?
Simplify.3 ? 8 + 7(7 + 5) + 8
A. 86 B. 116 C. 164 D. 548