<span>3(x + 5) = 3 · x + 3 · 5</span>
646 is 190% of 340
Simply do the following,
1) divide,

2) multiply the above answer by 100

3) dock on that percent sign,

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I hope that helps you out!!
Any more questions, please just ask me!!
~ Zoey
F(x) stands for a function, and if x stands for the number of days, than she can do 225 per day, which would be the multiplication to find the toatl 225x.
Then, with 45 extra, we add that to the equation:
F(x) = 225x + 45
Answer: F(x) = 225x + 45
Credit to: @2Educ8
+ = <3