Prepare a probability distribution for the experiment. Let x represent the random variable, and let P represent the probability.Three coins are tossed, and the number of heads is noted.
A. 
B. 
C. 
D. 
Answer: B
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Solve the problem.Find a polynomial for the sum of the shaded areas of the figure.
A. 65 B. 65y2 C. y2 + 64 D. y2 + 16y + 64
Solve the problem.Use the formula R = log
, where the magnitude of an earthquake on the Richter scale is based on I, the measurement of a seismic wave, and I0, the measurement of a seismic wave of a level zero earthquake with the same epicenter. An earthquake was recorded which was 2,511,886 times more powerful than a reference level zero earthquake. What is the magnitude of this earthquake? (Round to the nearest tenth.)
A. 5.4 B. 6.4 C. 0.6 D. 14.7
Completely factor the polynomial or state that the polynomial is prime.9x2 + 42x + 49
A. (3x + 7)(3x - 7) B. (3x + 7)2 C. (3x - 8)2 D. (3x - 7)2
Solve the following problem where a radical equation must be solved.The time (called the period) that it takes a pendulum to swing one full cycle is related to the length of the pendulum by approximately 
, where t is the period in seconds and L is the length in feet. Find the length of a pendulum whose period is 1.7 seconds. Let ? ? 3.14. Round to the nearest hundredth when necessary.
A. 14.27 ft B. 22.4 ft C. 89.59 ft D. 2.27 ft