What is the product of (3a+2)(4a^2-2a+9)

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).

Write an inequality and solve each problem.for exercises 11 and 12, interpret the solution.

What value of x is in the solution set of 4x – 12 s 16 + 8x?