Find the volume.Find the volume of the solid generated by revolving the area under y = 3e-x in the first quadrant about the x-axis
A. 9?
B. 3?
C. 18?
D. 
?
Answer: D
Mathematics
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For f(x) = A sin 
+ D,identify either A, B, C, or D as indicated for the sine function.y = 5 cos 
Find A.
A. 3
B. 5
C. 15
D. 
Mathematics
Answer the question.What does the digit 7 mean in the number 189,247?
A. 7 ones B. 7 tens C. 7 thousands D. 7 hundreds
Mathematics
Tell whether the statement is true or false.Let A = {2, 3, 4, 5, 6, 7}, B = {4, 6, 8}, C = {2, 3, 5, 7}, D = {2, 7}, and 
{6, 8} ? B
A. True B. False
Mathematics
Solve the equation.
- 
= 1
A. -3, -1 B. 3 C. No solution D. 3, -1
Mathematics