Perform the row operation(s) on the given augmented matrix.R2 = -4r1 + r2 
A. 
B. 
C. 
D. 
Answer: C
Mathematics
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Find the discount period.Loan made: Sep 10Length of loan: 320 daysDate of discount: Mar 6
A. 177 days B. 146 days C. 143 days D. 174 days
Mathematics
The function f is one-to-one. Find its inverse.f(x) = x3 - 6
A. f-1(x) = 
B. f-1(x) = 
C. f-1(x) = 
- 6
D. f-1(x) = 
+ 6
Mathematics
Evaluate the expression. Make sure you simplify.1 - (-6)(-3)2
A. -53 B. 55 C. 63 D. 361
Mathematics
Solve the equation.Solve sec ? = 
for ?, where 0° ? ? ? 90°
A. 45° B. 90° C. 60° D. 30°
Mathematics