Convert.4,400,000 centimeters = kilometers
A. 4.4
B. 440
C. 0.44
D. 44
Answer: D
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Match the surface show below to the graph of its level curves.
A. 
B. 
C. 
D. 
Productivity and yield of cultivated crops are often reduced by insect pests. The following graph shows the relationship between the yield of a certain crop, f(x), as a function of the density of aphids x. (Aphids are small insects that suck plant juices.) Here, f(x) is measured in kilograms/ 4,000 square meters, and x is measured in hundreds of aphids/bean stem. By computing the slopes of the respective tangent lines, estimate the rate of change of the crop yield with respect to the density of aphids when that density is 200 aphids/bean stem and when it is 800 aphids/bean stem.
?
?
A. - 0.5 when it is 200 aphids/bean stem,- 1.333 when it is 800 aphids/bean stem
B. 00.5 when it is 200 aphids/bean stem,01.333 when it is 800 aphids/bean stem
C. 02 when it is 200 aphids/bean stem,00.75 when it is 800 aphids/bean stem
D. - 2 when it is 200 aphids/bean stem,- 0.75 when it is 800 aphids/bean stem
Use the appropriate formula to answer the question.The area of a triangular flag is 368 cm2. If the height of the flag is 23 cm, what is the length of the base?
A. 8 cm B. 32 cm C. 16 cm D. 352 cm
The parametric equations for the paths of two projectiles are given below. At what rate is the distance between the two objects changing at 
? If necessary, round your answer to two decimal places.
?
?
A. -0.41 B. -0.76 C. -0.27 D. -3.93 E. -2.07