Answer:

Step-by-step explanation:
90 cm in metres is = 0.09 m
Writing it as a fraction of 2.4 m
=> 
<u><em>In simplest form</em></u>
=> 
If restaurant rotates

every 15 minutes, then after one hour it will rotate

.
When restaurant makes full rotation

, the length will be

. But

<span>is only

from the full rotation, so the bird will pass

ft
</span><span>
</span><span>
Answer: B is a correct choice
</span>
#1 is incorrect. The first equation says that his grandmother is not more than 80 years old. If you confine yourself to whole numbers, then she could be 80 but not more. That inequality should be written as g < 81 or if you are a purist, g≤ 80.
The second equation is correct. At the very most her age is equal to 3k - 3 so at most it would be written as g = 3k - 3.
Since it is not that much, you would write it as g ≤ 3k - 3