Simplify by combining like terms.5x - 4x + 3x - x - 8x
A. -4x
B. -6
C. -5x
D. 6
Answer: C
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Find a parametrization for the line segment beginning at P1 and ending at P2.P1(-3, 0, -5) and P2(0, -5, 0)
A. x = -3t, y = 5t - 5, z = -5t, 0 ? t ? 1 B. x = 4t, y = 6t - 5, z = 6t, 0 ? t ? 1 C. x = 4t - 3, y = 6t, z = 6t - 5, 0 ? t ? 1 D. x = 3t - 3, y = -5t, z = 5t - 5, 0 ? t ? 1
Find the limit.
A. -? B. Does not exist C. 1/2 D. ?
Write the numeral in the following problem as a decimal numeral. By decimal numeral, we mean the system we use in everyday arithmetic. ? DCCIX ?
A. 709 B. 48 C. 1,997 D. 2,001 E. 719
Solve the problem.Use the formula L = 10 ? log 
, where the loudness of a sound in decibels is determined by I, the number of watts per square meter produced by the sound wave, and 
What is the intensity of a noise measured at 93 db?
A. 9.3 × 10-10 watts per square meter B. 1.09 × 1016 watts per square meter C. 2 × 10-3 watts per square meter D. 2 × 10-2 watts per square meter