For multiplication, if both integers have like signs, it is always positive. If they have unlike signs it is negative.
For division, if both integers have like signs it is positive. If they have unlike signs it is negative.
Evaluate the function at the three values of the range and see what you get. The appropriate choice is ...
... D) {15, 3, 0}
_____
Evaluation can sometimes be simpler if you rearrange the function to a form called "Horner's form."
... f(x) = (x -4)x +3
Then the evaluation looks like (for x=-2) ...
... f(-2) = (-2-4)(-2)+3 = (-6)(-2) +3 = 12 +3 = 15
This is sufficient to identify D as the answer of choice.
The area of the trapezoid is given by the formula A= (a+b)/ 2 * h
in this question a= 8, b= 10, A= 108 inches², and h is what we have to find, substitute what we have got into the formula and you will have:
108= (8+10) /2 *h
108= 9 *h
h= 108/9
h= 12 inches
(I)
we are given when we add numbers of same sign
For exp: +2+3=+5
-2-3=-5
We can see that we are adding numbers and then we put same sign in front
so, we can fill spaces
When adding integers with the same sign, you add the numbers and put the sign
(II)
we are given when we add numbers of different signs
For exp: 2-3=-1
-2+3=+1
We can see that we are subtracting numbers and then we put sign of largest value in front
so, we can fill spaces
When adding integers with different signs you subtract the numbers and use the sign of the largest absolute value
