Which of the following gives an example of a set that is closed under addition.
a) the sum of a perfect square and a perfect square.
b) the sum of a prime number and a prime number.
c) the sum of a negative number and a negative number.
d) none of these are an example of the closure property.

You receive 15% of the profit from a car wash how much money do you receive from a profit of 300

Aculture started with 4,000 bacteria. after 5 hours, it grew to 5,200 bacteria. predict how many bacteria will be present after 19 hours. round your answer to the nearest whole number.

This is a rational expression because the denominator contains a variable. this is a polynomial with 3 terms. this is a rational expression because the denominator contains a variable. this is a polynomial with 4 terms. this is a rational expression because the denominator contains a variable. this is a polynomial with 4 terms. this is a rational expression because the denominator contains a variable. this is a polynomial with 3 terms. this is a rational expression because the denominator contains a variable. this is a polynomial with 5 terms.