Expand.(3x + 4)5
A. 243x5 + 324x4 + 432x3 + 576x2 + 768x + 1024
B. 243x5 + 1620x4 + 4320x3 + 5760x2 + 3840x + 1024
C. 243x5 + 3840x4 + 5760x3 + 5760x2 + 3840x + 1024
D. (9x2 + 24x + 16)5
Answer: B
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Find the probability.The age distribution of students at a community college is given below. Age (years)Number of students (f)
1106?A student from the community college is selected at random. Find the probability that the student is at least 31. Round your answer to three decimal places.
A. 0.925 B. 0.053 C. 0.075 D. 83
Solve the equation and express the solution in exact form using either ln or log as indicated.
x = 16
Express the answer using ln.
A. 
B. 
C. 
D. 
Evaluate.-19 ÷ 0
A. -19 B. 0 C. 1 D. undefined
Suppose that, for a certain exam, a teacher grades on a curve. It is known that the mean is 55 and the standard deviation is 7. There are 50 students in the class. What score would be necessary to obtain a C?
?
?
A. 48 or above B. 62 or above C. 50 or above D. 44 or above E. 42 or above