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3 years ago

Susan is 3 years more than twice her brother’s age. If her brother is m years old, which expression describes Susan’s age?

Mathematics

1 answer:

Arlecino [84]3 years ago

5 0

Answer:

2x+3

Step-by-step explanation:

Since her brother is m years old, you would have to multiply her brother's age by 2 since the question says "...twice here brother's age." This part would equal to the equation 2x. The question also says " ...3 years more..." This would change the equation with the addtion of 3. The completed problem would then be 2x+3. Hope this helped!

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2 years ago

The function h(x) is given below:

g100num [7]

Step-by-step explanation:

The domain and range of a function and its inverse are inverted i.e. The domain of the function will become range of its inverse and the range of the function will become the domain of its inverse.

When representing the function in ordered pairs, the first values in the pair represents the domain and second values represent the range of the function.

h(x) = {3,5),(5,-7)(6,-9)(10,-12)(12,16)}

Domain of h(x) is: {3, 5, 6, 10, 12}

Range of h(x) is: (5, -7, -9, -12, 16}

So,

Domain of $h^{-1}(x)$ = Range of h(x) = (5, -7, -9, -12, 16}

Range of $h^{-1}(x)$ = Domain of h(x) = {3, 5, 6, 10, 12}

Therefore, $h^{-1}(x)$ will be represented as:

{(5,3), (-7,5), (-9, 6), (-12, 10), (16,12)}

It seems like you have made some error while writing the original function because of which we are not getting an exact match in the answer. However by looking at the answers, option B is the nearest most and seems the correct answer.

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2 years ago