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The questions will be in the picture

And employees salary increase by $4500 which represents a 15% raise what is the employees new salary

You are at a restaurant and owe $38 for your meal. you want to leave a 20% tip. how much will your tip be?

One astronomical unit (1 au) is about 1.496 alt tag missing. kilometers. if you wrote this number of kilometers in regular decimal notation (for example, 528 and 3,459 are written in regular decimal notation), how many zeros would your number have?