Which equation is equivalent to log2 y = x + 7? A) y=2^x + 7

B) y=2(x+7)

C) y=2^x +7

D) y= (x+7)^ 2

We will use definition of logarithm.

We know that means .

Using this formula we get: means

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C)

Step-by-step explanation:

Let be , whose equivalence is determined by algebraic means:

1) Given.

2) Definition of logarithm

3) Definition of logarithm/Result

Hence, the correct answer is C.

first, we define the variables:

x: number of years after 1950

f (x): amount of vinyl sold.

then, with the variables defined, we have:

68594 vinyl records were sold in 1958 > f (8) = 68594

91299 vinyl records were sold in 1961 > f (11) = 91299

38720 vinyl records were sold in 1952 > f (2) = 38720

161743 vinyl records were sold in 1967 > f (17) = 161743

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step-by-step explanation:

whole numbers.

step-by-step explanation:

we are given the average monthly rainfall (in millimeters) model r(m) for the years 1900-2009 as a function of the month number m.

as we can see m is taken for the number of months for years 1900-2009.

we know that number of months can't be a negative number or decimal number or a fraction.

so, the number of months could be only positive whole numbers.

therefore, whole numbers is more appropriate for the domain of r.