Solve the equation using the quadratic formula.2x2 + 10x + 5 = 0
A. x = 
B. x = 
C. x = 
D. x = 
Answer: A
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The graph of exponential growth is decreasing.
Answer the following statement true (T) or false (F)
The table below shows the pressure P, in dynes per square centimeter, exerted on the ear by a sound with loudness D measured in decibels. D 65 85 90 105 110 P 0.36 4.6 9.4 33 52? A: Use exponential regression to model pressure as a function of loudness. Round the initial value of the model to four decimal places.B: Plot the exponential model along with the data points.C: According to the exponential model, how is pressure on the ear affected when loudness increases by 1 decibel? Report your answer as a percentage.
What will be an ideal response?
Solve the problem.On a map of the Thunderbird Country Club golf course, 1.5 inches equals 30 yards. How long is the 15th hole if the map shows 12.5 inches? (Round approximations to the nearest yard.)
A. 250 yd B. 3.6 yd C. 375 yd D. 562.5 yd
Provide an appropriate response. Multiply and simplify, putting answer in complex form: 3i(2 - 4i)
A. 6 - 12i B. 12 + 6i C. -12 + 6i D. 6 + 12i