What is the simplest form of the expression (14.2a + 9.8b) – (13.1b – 0.2a) – (3.7a + 4.8b)?
10.7a – 8.1b
10.7a Plus 27.7b
18.1a Minus 8.1b
18.1a Plus 27.7b

When 142 is added to a number the result is 64 more times the number my options are 35 37 39 41

Sketch the region enclosed by the given curves. decide whether to integrate with respect to x or y. draw a typical approximating rectangle and label its height and width. y= 5x, y=7x^2then find the area s of the region.

How many kilograms of a 5% salt solution and how many kilograms of a 15% salt solution must be mixed together to make 45kg of an 8% salt solution?