Which of the following are irrational numbers?

A. - 4

B. 3/13

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C ...21

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D. / / 2

6 times a number, x, is at least 22

80% of what number is 24

Mark's food for lunch cost $12. The restaurant added a 5 percent sales tax, $0.60, to the bill. Mark wants to pay a 20 percent tip on the total bill including sales tax. What is the amount of the tip? $2.28 $2.40 $2.52 $3.00

Ishaan is three times as old as christopher is also 14 years older than Christopher. How old is Ishaan

18 people order soup and sandwiches for lunch. Sandwiches cost 7.75 each and 4.50 the soup. Total cost of 18 luchees was 113.50 how many sandwiches were ordered

Which is the most reasonable estimate for the sum 61.92+174.8

What is the value of eln7x?

A person tips a waiter 18% of the bill. If the tip is $4.50, how much is the bill?

Which expression represents the phrase 5 + the quotient of 12.8 and 3.2

Michael is 4 times as old as Brandon and is also 27 years older than Brandon. how old is Brandon