4(r)^x=y
4(r)^(1)=2
r=1/2
y=4*(1/2)^x
Answer:
$159
Step-by-step explanation:
we know that
The equation of a exponential growth function is equal to

where
y is the balance in the saving account
x is the number of years
a is the initial amount
r is the percent rate of change
we have

substitute


For x= 1 year
substitute

<span>y-3=-2(x-6)
y-3= -2x +12
y - 3 + 2x- 12 =0
2x+y =15,
Ax +By =C
A=2, B=1, C=15</span>
Answer:D
Step-by-step explanation:
Answer/Step-by-step explanation:
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