Ateacher haa 5 rulers each ruler is one foot long and 3 of them are plastic what is the total leng of the rulers if they are laid end to end

Asquare parking lot has 6,400 square meters what is the length in meters

Each month, a shopkeeper spends 5x + 14 dollars on rent and electricity. if he spends 3x−5 dollars on rent, how much does he spend on electricity? for which value(s) of x is the amount the shopkeeper spends on electricity less than $100? explain how you found the value(s).

What are the exclude value of mn+3m