Given Information: How much does it cost (in dollars) to operate one street lamp in Tempe, Arizona for one year?

Given Information:

NOTE: All numbers must be entered as 5000 or 5e3 or 5.0e3 and not with commas as in "5,000" and not as fractions as in "3/4" and not as percentages as in "70%".

Questions:

2)   

3)   

Please help me solve these and break them down with the formulas used