Use the commutative and/or associative property of addition and then simplify.7 + (n + 2) + 8
A. n + 10
B. n + 17
C. 17
D. 7n + 10
Answer: B
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Write the expression in the standard form a + bi.
4
A. 4i B. -4i C. 4 D. -4
y? ? 6xy = 2x
Solve the differential equation.
Find the point-slope form of the equation of the line satisfying the given conditions and use this to write the slope-intercept form of the equation.x-intercept = 
and y-intercept = 4
A. y = - 
x - 4
B. y = - 
x + 4
C. y = - 
x + 4
D. y = - 
x + 8
Solve.The following data are the snowfall readings (in inches) for a certain city's top ten winter storms. 29?18.3?21?18.3?23.317.3?29?16.5?18.3?15.8(a) Find the mean, median, and mode for the data.(b) Suppose the value 15.8 was actually recorded as 51.8. Compute the mean, median, and mode again using this value. Comment on any differences from the results in part (a).
A. (a) mean: 20.68, median: 18.3, mode: 18.3; (b) mean: 23.5090909, median: 18.3, mode: 18.3; The mean is greater than the mean in part (a) but the median is the same as in part (a). B. (a) mean: 21.75, median: 19.65, mode: 29; (b) mean: 25.35, median: 22.15, mode: 29; The mean and median are both greater than in part (a). C. (a) mean: 21.75, median: 18.3, mode: 29; (b) mean: 21.75, median: 18.3, mode: 29; The mean, median, and mode are the same as in part (a). D. (a) mean: 20.68, median: 18.3, mode: 18.3; (b) mean: 24.28, median: 19.65, mode: 18.3; The mean and median are both greater than in part (a).