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  3. f(x) and g(x) are both functions with domains and

f(x) and g(x) are both functions with Domains and Codomains all positive Reals. f(x) = 2x2 and...

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Advance Math

f(x) and g(x) are both functions with Domains and Codomains allpositive Reals.

f(x) = 2x2 and g(x) = 4x - 1.   If f(g(x) =8, what is x?

a

2

b

1/2

c

3/4

d

None of the above

____________________________

If f(x) = 7x + 3 and g(x) = 4 - x3, then what isg(f(-2))?

a

87

b

1335

c

12

d

-13

___________________________________

Let R be the relation from A to B, where A = {1,2,3} and B = {5,6,7,8}

R = {(1,6), (2, 8), (3, 7), (2,6)}

Remove one ordered pair so that R will be a function from A toB.

a

Remove(1,6)

b

Remove (3,7)

c

Don't remove anything R is already a function.

d

Remove either (2,8) or 2,6)

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