Write a matrix equation equivalent to the system of equations. 7x + 9y + 2z = 90 4x + 9y + 6z = 62 7x + 3y + 9z = 59
A.
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= 
B.
=
C.
= 
D.
=
Answer: A
Mathematics
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Solve for x using an equivalent exponential expression.log5 25 = x
A. 125 B. 2 C. 30 D. 5
Mathematics
Determine the amplitude and range of the function and sketch its graph.y = 5 cos x
A. amplitude: 5; range: [0, 5]
B. amplitude: 5; range: [0, 5]
C. amplitude: 5; range: [-5, 5]
D. amplitude: 5; range: [-5, 5]
Mathematics
Work the application.Last year the hatch-back model of a new car cost $16,385. This year's model costs $19,736. How much more does this year's model cost?
A. $35,121 B. $3351 C. $36,121 D. $3251
Mathematics
Graph the hyperbola.
- 
= 1
A. 
B. 
C. 
D. 
Mathematics