F(x)=2^x+6
let f(x) = n
f^-1(n) = x
x = 2^n + 6
x - 6 = 2^n
2^n = x - 6
log 2^n = log (x-6)
n log 2 = log (x-6)
n = (x-6)/2
f^-1(x) = (x-6)/2
To download 5 albums it would be $60.
Explanation: $36 divided by 3 is $12.
5 x $12= $60.
9/10 = z/8
cross multiply
9/10(10)(8) = z/8(8)(10)
9(8) = z(10)
72 = 10z
Isolate the z, divide 10 from both sides
72/10 = 10z/10
z = 72/10
z = 7.2
7.2, or D) is your answer
hope this helps
Answer:
110 IQ too!
Step-by-step explanation:
For statistical problems, especially for ones with large enough sample sizes like this one (n = sample size = 100), the means for various samples is usually equal to the population mean.
It is the standard deviation of sample that differs from the standard deviation of the population through
σₓ = σ/√n
But, The mean of the sample = The population mean
μₓ = μ = 110 IQ
