Find the limit and determine if the function is continuous at the point being approached.
sin(x sin2x + x cos2x + 1)
A. does not exist; no
B. sin 4; yes
C. sin 4; no
D. sin -2; yes
Answer: B
Mathematics
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Solve.Amy teaches Chinese lessons for $95 per student for a 6-week session. From one group of students, she collects $3800. Find how many students are in the group.
A. 42 students B. 44 students C. 40 students D. 30 students
Mathematics
Find the inverse matrix 
What will be an ideal response?
Mathematics
Solve the equation.
x + 
= 
A. - 
B. - 
C. 
D. - 
Mathematics
Write a system of equations associated with the augmented matrix. Do not try to solve.
A. 20x + 17y = 11 18x + 7y = 16 B. 17x + 20y = 11 7x + 18y = 16 C. 17x + 20y = -11 18x + 7y = -16 D. 17x + 20y = 11 18x + 7y = 16
Mathematics