What is the value of x in this figure?

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x =

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).

Complete the solution of the equation. find the value of y when x equals to 28 x+3y=28

I’m confused on how to work the pie charts