College students are offered an 8% discount on a textbook that sells for 43.50. if the sales tax is 8%, find the cost of the textbook including the sales tax

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).

Need same math paper but the back now i hope your able to read it cleary i need with hw

Prove that 16^4-2^13-4^5 is divisible by 11.