Answer:

Step-by-step explanation:
<u>Step 1: Divide both sides by -8</u>
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Answer: 
anything above 28
Step-by-step explanation:
Seven times 4 is 28, times any number is anything 28 and above
Answer: x = -30
Step-by-step explanation:
y = -20 by using process of elimination substitute y as -20 in either of the equations you get -30 for x
Answer:
5 is the hight
Step-by-step explanation: