Dummy forgot his pin code. 20% of his pin code was 246.8 what was dummy pin code?
1 answer:
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Answer:
x = 10
Step-by-step explanation:
First, distribute:
Next, subtract from both sides:
(multiply by 2 to get common denominator,
)
Next, subtract from both sides:
(multiply by 2 to get common denominator,
)
⇒
Next, multiply both sides by 10:
FInally, divide both sides by -1:
x = 10
Actually Welcome to the concept of expo functions.
f(x) = -8(2)^x - 12 ,
for f(0) ,here substitute x = 0
so we get as ,
==> f(0) = -8(2)^0 -12
==> f(0) = -8-12
==> f(0) = -20
hence, f(0) = -20