Find the inverse of the function.f(x) = x3 + 3
A. f-1(x) = 
B. f-1(x) = 
C. f-1(x) = 
D. f-1(x) = 
- 3
Answer: B
Mathematics
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Find the principal unit normal vector N for the curve r(t).r(t) = (t2 + 3)j + (2t - 4)k
A. N = 
j - 
k
B. N = - 
j + 
k
C. N = 
j - 
k
D. N = - 
j + 
k
Mathematics
Evaluate the integral using the given substitution.
dy , u = y6 + 5y3 + 5
A. 
(y6 + 5y3 + 5)4 + C
B. 
(y6 + 5y3 + 5)4(10y4 + 10y) + C
C. 
(y6 + 5y3 + 5)4 + C
D. 9(y6 + 5y3 + 5)2 + C
Mathematics
Solve the problem.An average score of 90 for 5 exams is needed for a final grade of A. John's first 4 exam grades are 79, 89, 97, and 95. What range of scores on the fifth (and last) 100-point exam will guarantee John an A in the course?
A. 95 to 100 B. 85 to 100 C. 90 to 100 D. 99 to 100
Mathematics
Graph the rational function.f(x) = 
A. 
B. 
C. 
D. 
Mathematics