The answer would be in Celsius so only answers (1) and (3) are possible.  Now plug in or substitute 68 into the equation: 5/9(68-32) = 5/9(36) = 20
So 68 F = 20 C  That’s it — 2 points!!!

This problem ( opportunity) is really about attention to detail.

Mathematically, we need to use the distributive property.

2 (3g -4) = 6g -8

-(8g + 3) = -8g -3

Put em together:  6g – 8g definitely-2g. Look at all the answers:  they all have-2g

Put em together: -8 – 3. Here’s the decision point

-8 less 3 or you lose $8, you lose $3,  or you can use a number line!

That’s awesome…2 more points!!

We can already analyze the two graphs above for the zeros.
Notice how (2) crosses the x-axis at (-2,0) and (4,0) at the ‘dots’ on the x-axis so that’s not right as we are looking for zeros of -4 and 2 (close but opposite signs)>
Ok let’s check out (4)…
Notice how (4) crosses the x-axis at (-4,0) and (2,0)? :)

(If we had to check (1) and (3), we would put each equation into Y= and check out the graph and/or table but no need to do that this time around)