Solve this: a resident in a particular city pays a water bill of $3.51 per month plus $0.59 per 1000 gallons of water (used up to 4000 gallons). if the city has 561,000 costumers that use less than 4,000 gallons per month. find it's monthly revenue function r(x). where total number of gallons x measured in thousands. r(x)=

  R(x) = 1,969,110 +0.59x . . . . in dollars

Step-by-step explanation:

The basic revenue to the city from the 561,000 customers will be ...

  561,000 × $3.51 = $1,969,110

The usage fee is still $0.59 per 1000 gallons, so the total for a total of x thousand gallons will be ...

  R(x) = $1,969,110 + $0.59x

for the friend request.

when a figure, such as triangle (xyz) is reflected over the line y = x to create x'y'z' the x-coordinates and y-coordinates of the original image (pre-image) will be reversed for the image. (e.g., (x, y) > (y, x)) this means that the pre-image position of the x- and y-coordinates switch places which in turn provides a mirror like image of the original xyz.  

i notice that when i draw a line segment from x to x', that the points are parallel from each other -- they are exactly across from each other and do not intersect with any other points.  

yes, think i would see the same characteristic if you drew the line segment connecting y with the reflecting line and then y' with the reflecting line because of the essence of reflections. because it is a mirror image, each point was effected the same way which leads me to conclude that they same would apply to y and y'.