Answer:
11a. 15x + 6
11b. x + 8 < 16 or x + 8 - 16
12. 3x + 15 + 5x = 8x + 15
13. 7x + 31
Step-by-step explanation:
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true
The answer is 18,019 days.
90 ft or 30 yds
26(2)=52
19(2)=38
52+38=90