On monday, 350 people bought tickets to the county fair. tickets cost $7 for
adults and $3 for children. the total revenue from ticket sales on monday was
$2050. the system of equations below represents the number of people and
total sales for the county fair on monday, where x represents the number of
child tickets and y represents the number of adult tickets.
*+ y = 350
3x+7y = 2050
how many adult tickets were sold on monday?

b. x + 1

step-by-step explanation:

i'am smart

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'.

8

step-by-step explanation:

3boys + 4 girls = 7 students

3 boys to students   true   yes

4 girls to 3 boy   true     yes

3 boys to 7 girls   false   no

4 girls to 7 students   true   yes