Solve.The area of a square is 49 square miles. Find the length of a side of the square.
A. 7 mi
B. 24.5 mi
C. -7 mi
D. 12.25 mi
Answer: A
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For the smooth curve r(t), find the parametric equations for the line that is tangent to r at the given parameter value 
r(t) = (5 tan t)i - (3 sin t)j + (4 cos2 t)k ; t0 = 
A. x = 5 + 10t, y = -
+ 
t, z = 2 + 4t
B. x = 5 + 10t, y = -
- 
t, z = 2 - 4t
C. x = 5 + 10t, y = -
- 
t, z = 4 - 4t
D. x = 10 + 5t, y = -
- 
t, z= -4 + 2t
Solve the problem.In a certain city, the cost of a taxi ride is computed as follows: There is a fixed charge of $2.40 as soon as you get in the taxi, to which a charge of $1.60 per mile is added. Find an equation that can be used to determine the cost, C(x), of an x-mile taxi ride.
A. C(x) = 2.50x B. C(x) = 1.60 + 2.40x C. C(x) = 2.40 + 1.60x D. C(x) = 4.00x
Graph the inequality.y < 
x
A. 
B. 
C. 
D. 
Solve. If necessary, round percents to the nearest tenth, dollar amounts to the nearest cent, and all other numbers to the nearest whole.25% of the lawyers in a firm are female. If there are 888 lawyers altogether, how many lawyers are female?
A. 222 lawyers B. 3552 lawyers C. 666 lawyers D. 3 lawyers