Hello :
4(3x² +2)-9=8x²+7 = <span>4(3x^2 +2)-9 +9 =8x²+7 +9
= </span><span> 4(3x² + 2)=8x² + 16
</span><span>(State a reason why1) Addition Property of Equality)</span>
Answer:

Step-by-step explanation:
80 is the estimate that I say it's pretty close
Answer:
73
Step-by-step explanation:
...wait 69?!?!?!?!