Help pls ill give brainlest

Volume of a cylinder with a radius of 13 in and height of 30 in

If sec theta = 5/3 and the terminal point determined by theta is in quadrant 4, then

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).