Solve the system of nonlinear equations using the method you prefer.y2 + 2x2 = 13y2 - x2 = 1
A. (2, 
), (-2, 
)
B. (2, -
), (2, 
)
C. (3, 
), (3, -
), (-3, 
), (-3, -
)
D. (2, 
), (2, -
), (-2, 
), (-2, -
)
Answer: D
Mathematics
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Simplify the difference quotients 
and 
for the following function. Rationalize the numerator when necessary.f(x) = 
A. 
; 
B. - 
; - 
C. 
; 
D. - 
; - 
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Let U = {all soda pops}, A = {all diet soda pops}, B = {all cola soda pops}, 
and 
Describe the set in words.(A ? B) ? D
A. All soda pops B. All diet, caffeine-free cola soda pops C. All diet or all cola or all caffeine-free soda pops D. All soda pops not in cans
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Find the average of the numbers.4, 3, 10, 15, 3
A. 8.75 B. 8 C. 36 D. 7
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Find the amplitude, period and mid-line. Also, find the maximum and minimum.
y = 3cos (4t ) ?1
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