Find the slope of the line (if it exists) and the y-intercept (if it exists).y = 8 + 3x
A. Slope -8; y-intercept (0, 3)
B. Slope -3; y-intercept (0, 8)
C. Slope 8; y-intercept (0, 3)
D. Slope 3; y-intercept (0, 8)
Answer: D
Mathematics
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Solve the problem.Four times a number added to 9 times the number equals 
Find the number.
A. 7.2 B. 5 C. 7 D. 0.6
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Find a value of k that will make f a probability density function on the indicated interval.f(x) = kx2; [-1, 4]
A. 
B. 
C. 
D. 
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Solve the problem.The half-life of silicon-32 is 710 years. If 80 grams is present now, how much will be present in 200 years? Round your answer to three decimal places.
A. 78.453 g B. 11.353 g C. 65.81 g D. 0 g
Mathematics