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Select all expressions that show x increased by 15%. A. 1.15x B. x+15/100x C.15/100x D. (1+0.15)x E.(100+15)x

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User Yota
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1 Answer

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Answer:

A, B, D

Explanation:

"x increased by 15%" means "x plus 15% of x".

This can be written several ways.

x + 15%x . . . . . . a direct translation

x + 15/100x . . . . matches choice B

x +0.15x . . . . . . with the percentage as a decimal

(1 +0.15)x . . . . . . matches choice D

1.15x . . . . . . . . . . matches choice A

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Additional comment

It can be helpful to remember that % is a shorthand way to write /100. That is ...

15% = 15/100

It can also be helpful to remember place value:

15/100 = "fifteen hundredths" = 0.15

User Mirzohid Akbarov
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