Add. Do not use a number line except as a check.-3 + 6
A. -9
B. 9
C. 3
D. -3
Answer: C
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Solve.The number of mosquitoes M(x), in millions, in a certain area depends on the June rainfall x, in inches, according to the function 
What rainfall produces the maximum number of mosquitoes?
A. 4 in. B. 2 in. C. 0 in. D. 16 in.
One of sin x, cos x, and tan x is given. Find the other two if x lies in the specified interval.tan x = 
,
x in 
A. sin x = 
, cos x = 
B. sin x = - 
, cos x = - 
C. sin x = 
, cos x = 
D. sin x = - 
, cos x = - 
The decibel level D, a measure of loudness of sound, can be calculated from the relative intensity I of sound. The relationship is
.
A: If one sound is 1,000 times as intense as another, how do their decibel ratings compare?B: Is the graph of D versus I concave up or concave down? Explain what the concavity means in practical terms.C: Solve the equation above to express relative intensity as a function of decibels.
?
What will be an ideal response?
Use a graph to solve the system.x - y = 2x + y = 14
A. {(16, 12)} B. {(12, 16)} C. {(8, 6)} D. {(6, 8)}