Solve. If necessary, round to the nearest tenth.The zoo has hired a landscape architect to design the triangular lobby of the children's petting zoo. In his scale drawing, the longest side of the lobby is 9 cm. The shortest side of the lobby is 6 cm. The longest side of the actual lobby will be 35 m. How long will the shortest side of the actual lobby be?
A. 0.2 m
B. 52.5 m
C. 23.3 m
D. 0.5 m
Answer: C
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Solve the problem.The distance D in feet that an object has fallen after t seconds is given by D(t) = 16t2. (i) Evaluate D(2) and D(5). (ii) Calculate the average rate of change of D from 2 to 5. Interpret the result.
A. (i) 32, 80 (ii) 112; the object's average speed from 2 to 5 seconds is 112 ft/sec. B. (i) 64, 400 (ii) 48; the object's average speed from 2 to 5 seconds is 48 ft/sec. C. (i) 32, 80 (ii) 48; the object's average speed from 2 to 5 seconds is 48 ft/sec. D. (i) 64, 400 (ii) 112; the object's average speed from 2 to 5 seconds is 112 ft/sec.
Graph the system of inequalities. Shade the region that represents the solution set.x2 + y2? 16x + y? 2
A. 
B. 
C. 
D. 
Graph the parabola.x2 = -20y 
A. 
B. 
C. 
D. 
Solve the problem.If the average cost per unit C to produce x units of plywood is given by 
what is the unit cost for 40 units?
A. -$12.50 B. $16.67 C. $37.50 D. $0.75