A picture is 10 inches wide by 15 inches long. The area of the picture, including a frame that is x inch thick, can be modeled by the function A(x) = (2x + 10)(2x + 15).
a.
Use function notation to write a statement that means: the area of the picture,

im not sure

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it has changed from the width and the height.

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there is only one way to arrange all the eight relative to each other because they are not distinct. we have

now there are nine places to place an (and not more than one in one place).   because we have four symbols, we need to choose four of these nine places to insert an . order does not matter because the are not distinct.

thus there are 1 · c(9,4) ways, or, if we calculate it,

thus there are 126 ways to form such "words."

hey i have you need to go to the lesson of the dba and go to page 4 there should be cards and they have questions on them and if you click them there will be the answers and you can use that for the dba

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