Answer: The height of street would be 3.26 feet.
Step-by-step explanation:
Since we have given that
Angle of elevation = 71°
Distance traveled = 12 feet
Angle of elevation becomes 46°.
So, the height of the street lamp post would be

Hence, the height of street would be 3.26 feet.
Given:
At the store a cell phone cost 1.1 times as much as it sells online.
The cost of it is $888.98 online.
To find:
How much more does it cost from the store?
Solution:
It is given that,
Cost of a cell phone online = $888.98
At the store a cell phone cost 1.1 times as much as it sells online. So, cost of the cell phone at store is

The cost of cell phone at store is $977.878
.
The difference between the cost of cell phone at store and online is

Therefore, the cell phone cost is $88.898 much more at the store.