Help please I really need it

What is the solution to the division problem below x3+x2-11x+4/x+4

Sara made $253 for 11 hours of work. at the same rate how much would he make for 7 hours of work?

Ameteorologist is studying the monthly rainfall in a section of the brazilian rainforest. she recorded the monthly rainfall, in inches, for last year. they were: 10.4, 10.3, 11.7, 11.1, 8.0, 4.4, 2.6, 1.8, 2.5, 4.4, 7.3, 9.5 fill in the missing values in the formula. what is the variance?