P(x)=90-3x what is the revenue function?

Linda loans her friend $250 with a 5% monthly intrest rate. how much was the whole loan?

What is the slope of any line parallel to the line 8x+9y=3 in the standard (x, y) coordinate plane?

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?