an advertisement claims that a 5-pound box of detergent will wash 20 loads of laundry. A 5-pound box cost $3.50. A 15-pound box costs $10.00. how much will you save PER LOAD if you buy the 15-pound box?

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Use the x-intercept method to find all real solutions of the equation. -9x^3-7x^2-96x+36=3x^3+x^2-3x+8

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).