Which of the following functions represents the values in the table below?

a     -4         -3         -2         -1    
f(a)     25         16         9         4    

1. f(a) = 4a^2 + 5
2. f(a) = a^2 - 2a + 1
3. f(a) = a^2
4. f(a) = a^2 - 4a - 3

40 minutes

step-by-step explanation:

add the time and multiply by 2

r = 78539458390583095803458309458039485093485 or just 3

step-by-step explanation:

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