Simplify. Express your answer in standard form.(3a4 + 4a3) + (5a4 + 9a3) - (3a4 - 8a3)
A. 26a14
B. 26a7
C. 5a8 + 21a6
D. 5a4 + 21a3
Answer: D
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Solve the initial value problem.Differential Equation: 
= 
(t + 2)5/2i + etjInitial Condition: r(0) = 0
A. r(t) = [(t + 2)7/2 - 27/2]i + (et - 1)j B. r(t) = [(t + 2)9/2 - 29/2]i + (et - 1)j C. r(t) = [(t + 2)7/2 + 27/2]i + (et + 1)j D. r(t) = (t + 2)7/2i + etj
Multiply using the galley method.79 × 19
A. 1601 B. 1491 C. 1511 D. 1501
Find the volume of the solid generated by revolving the region about the given line.The region bounded above by the line 
, below by the curve 
, and on the right by the line 
, about the line 
A. 
?
B. 
?
C. 625?
D. 
?
Solve the problem.Six people from different occupations were interviewed for a survey, and their annual salaries were as 
and 
What is the mean annual salary for the six people?
Fill in the blank(s) with the appropriate word(s).