Solve the system of two equations in two variables.-6x + 66 = 6y 3x - 3y = 15
A. (7, 4)
B. (8, 4)
C. No solution
D. (8, 3)
Answer: D
Mathematics
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Simplify.
A. 
B. 
C. 
D. 
Mathematics
Find all values of x in the interval [0°, 360°) that satisfy the equation. Round approximate answers to the nearest tenth of a degree.cos2 2x - sec2 2x = 0
A. {45°, 135°, 225°, 315°} B. {0°, 45°, 90°, 135°, 180°, 225°, 270°, 315°} C. {0°, 90°, 180°, 270°} D. {0°, 180°}
Mathematics
If f satisfies the equation of change 
, then what can be said about the function 
?
?
A. f is linear with slope 4.
B. f is linear with slope 
.
C. f is exponential with growth factor 4.
D. f is exponential with growth factor 
.
Mathematics
Write the sum using summation notation.0 + 2 + 6 + 12 + 20
A. 
B. 
C. 
D. 
Mathematics