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If a is even and b is even, then their product ab is

 

A)even.

B)negative.

C)odd.

D)positive.

E)zero.

 

 

Which expression has an odd integer value for all integers x and y?

 

A) x + 2y

B) 3x + 2y

C) 3xy + 5y

D) x^2 + 2y

E) 2xy^2 + 1

 Dec 4, 2019
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1. The correct answer is even. Two even numbers multiplied together will always yield an even number.

 

 

2. Two times any number is even and any even number plus 1 is odd. The correct answer is 2xy^2 + 1.

 Dec 5, 2019

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