Simplify the expression.

−7a + 2x + 5a − 6x
A) −12a − 8x
B) −12a − 4x
C) −2a − 4x
D) −2a − 8x

What is the quadric regression equation that fits these data

Monthly water bills for a city have a mean of $108.43 and a standard deviation of $32.09. find the probability that a randomly selected bill will have an amount greater than $155, which the city believes might indicate that someone is wasting water. would a bill that size be considered unusual?

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.