Which statements are true about the rules of multiplication for signed numbers? Check all that apply. The product of two negative integers is positive.
The product of two integers with different signs is positive.
If two numbers are the same sign, then the product is positive.
The product of a positive and a negative is negative.
If the signs of two integers are different, then the product is positive.
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The product of two negative integers is positive.

If two numbers are the same sign, then the product is positive.

The product of a positive and a negative is negative.

Step-by-step explanation:

answer: evaluate the objective function at each vertex to determine which - and -values, if any, maximize or minimize the function. example: find the minimum value and maximum value of the objective function f ( x , y ) = 4 x + 5 y , subject to the following constraints