Answer: the second bubble
Step-by-step explanation:
First you look at the last two terms (-a-4)(-a+4). Since this a multiplication you multiply each components in the bracket with the other components of the bracket.
-a x -a -ax4 -4x-a -4x4
= a^2 -4a +4a -16
= a^2 -16
Now multiply by -2 and you get -2a^2+32
Hope that helps
Let's have x be the number of children tickets and 2x will be the adults. Now we can set up the following equation:
5.4x+8.9(2x)=626.4
Expand this out:
5.4x+17.8x=626.4
Combine like terms:
23.2x=626.4
Divide both sides by 23.2 to get x=27
7x • 32x<span>2
</span><span> 2.1 </span><span> x1</span><span> multiplied by </span><span>x2 = x(1 + 2) = x<span>3
</span></span>Answer: (7•32x3)