Hector and Linh are working individually on a problem involving the function f(x) = x^2 -5.
On a domain where f is invertible, Hector says that f^-1(4) = 3, and Linh says that
f^-1(4) = -3
Is Hector correct? Is Linh correct? Justify your answer.

1/5x+9 2/5y+7

step-by-step explanation:

whatvare the choices

step-by-step explanation:

i think it might be a but you might want a second opinion

x =-.20752

step-by-step explanation:

4^(x+2)=12

4^(x+2)=12

take the log base 4 on each side

log 4 (4^(x+2) = log 4(12)

we know log b(a^y) = y log b (a)

(x+2) log 4(4) = log 4 (12)

x+2 = log 4 (12)

we know   logb c = loga c/loga b

we want to convert to base 10   so a = 10

by default, we do not write the 10   c = 4   and b = 10

log4 10 = log 12/log 4

log4 10 = log 12/ log 4

x+2 = log 12/ log 4

subtract 2 from each side

x +2 -2 = log 12/ log 4 -2

x = 1.79248125 -2

x =-.20752