Stuck on pre-calc questions..help needed ASAP! )':?

LimaLimon91

New member
Can someone please help me make sense of this, no comprendo??? )':
Also if you could please explain HOW you got your answer, thanks.


Find a number 'b' such that the function 'f' equals the function 'g'.

1) The function 'f' has domain the set of positive
numbers and is defined by f (x) = 5x^2 - 7; the
function g has domain (b, ?) and is defined by
g(x) = 5x^2 - 7.

42. The function f has domain the set of numbers
with absolute value less than 4 and is defined
by f(x) =3/(x +5) ; the function g has domain the interval (-b, b) and is defined by
g(x) = 3/(x +5).
 
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