Answer:
Infinitely many solutions
Step-by-step explanation:
2y=14-2x
y=-x+7
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2(-x+7)=14-2x
-2x+14=14-2x
-2x-(-2x)=14-14
-2x+2x=0
0=0
infinitely many solutions
$0.54 x 2.6 =$1.404
$1.28 x 3.1=$3.968
$1.404 rounds to $1.40
$3.968 rounds to $4
$4 = $ 1.40 = $5.40
:)
Answer: The answer would be f^-1 (x) = x/2 - 3/2
The third one