Estimate the following sum by rounding each number to the nearest ten.
129.5 + 34.62 + 19.1

Enter the number of complex zeros for the polynomial function f(x) = x 4+ 5x² +6

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).

The probability that a student graduating from suburban state university has student loans to pay off after graduation is .60. if two students are randomly selected from this university, what is the probability that neither of them has student loans to pay off after graduation?