Since x=2, you plug it into your equation by replacing all the x with 2. You would then solve it by following the PEMDAS rule.
y= 4(2) + 2(2)^2 - (2)^3
y= 4(2) +2(4) - 8
y= 8 + 8 - 8
y= 16 - 8
y= 8
The answer would be the top right one because the input (x) must have one and only one output (y)
The exponential function is defined as y = a(1+r)^x, where "a" represents the original account and "r" the rate of growth or decay.
Then we have the following:
1) 22% grow
y = a( 1 + 22%/100 )^x = a(1.22)^x
So the solution is: 124(1.22)^x
2) 12% decay
y = a( 1 - 12%/100 )^x = a(0.88)^x
So the solution is: y = f(x) = 44(0.88)^x
3) 20% decay
y = a( 1 - 20%/100 )^x = a(0.8)^x
So the solution is: f(x) = 22(0.8)
4) 12% Groth
y = a( 1 + 12%/100 )^x = a(1.12)^x
So the solution is: f(x) = 42(1.12)^x
Answer: $60,518.50
Step-by-step explanation:
864,500 x 0.07
Answer:
75=100%
Step-by-step explanation:
15=20%
30=50%
75=100%