Post Test: Functions ♡ Submit Test
Reader 100ls
sino
The points on the graphs represent relations. Classify these relations according to whether or not they are functions.
2
21
1
2
Function
Not a Function

Functions: 2

Not a Function: 1 and 3

Step-by-step explanation:

1 and 3 cross over each other and don't go in a straight line.

Whilst, 2 does technically go in a straight line.

the answer is 5636.7

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