Solve.Tiffany bought a video for $11.50. If she paid with two $10 bills, what was her change?
A. $9.00
B. $9.5
C. $8.5
D. $8.4
Answer: C
Mathematics
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Find the indicated derivative for the given vector-valued function .Find 
r(t) for r(t) = 3t4i- 8t2j + 8tk.
A. 
r(t) = 36t2i - 16xj + 8k
B. 
r(t) = 12t2i - 16tj
C. 
r(t) = 12t2i - 16j + 8k
D. 
r(t) = 36t2i - 16j
Mathematics
Given matrix A, find the indicated cofactor.Find A42.A =
A. -3 B. -6 C. 6 D. 0
Mathematics
Find the event that corresponds with the outcome.Getting a number greater than 4 on a single roll of a die.
A. 
B. 
C. 
D. 
Mathematics
Divide, if possible. If a quotient is undefined, state so.-18 ÷ 1
A. Undefined B. 1 C. 18 D. -18
Mathematics