Find the domain of the composite function f ? g.f(x) = 
; g(x) = 
A. all real numbers
B. {x| x ? 2}
C. {x | x ? 2}
D. 
Answer: D
Mathematics
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Use the distributive property to perform the calculation.5 ? 19
A. 5 ? 19 = 5(20 - 1) = 100 - 5 = 95 B. 5 ? 19 = 5(20 - 1) = 100 - 5 = 105 C. 5 ? 19 = 5(20 - 1) = 100 - 1 = 99 D. 5 ? 19 = 5(20 - 1) = 100 - 20 = 80
Mathematics
Solve the equation for x, where x is restricted to the given interval.y = 3 tan 2x - 1, for x in 
A. x = 
arctan 
B. x = 
arctan (3y + 3)
C. x = 2 arctan (3y + 3)
D. x = 2 arctan 
Mathematics
Divide where possible.
A. 27
B. -27
C. - 
D. Undefined
Mathematics
Solve the formula for the indicated variable.
+ 
= 
for R
A. R = R1R2(R1 + R2)
B. R = R1 + R2
C. R = 
D. R = 
Mathematics