Can someone plz help? Only have a hour...I'll make crown the best and triple the points!!!

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 is the slope of the line shown below?

Write the equation in logarithmic form e^x=403.429