(05.05 MC) A family of 3 children and 2 adults visited a health club. The club charges $y an hour for
each child and $x an hour for each adult. If the family does not want to spend more than
$30 an hour at the health club, which of the following graphs best models the situation?
(5 points)

check the picture below.

well, the angle at the vertex d is clearly not a right-angle, let's check for the one at the vertex f which does look like,   however if it's indeed, that means ef is perpendicular to df, in which case their slopes will be negative reciprocal of each other.

so the negative reciprocal of the slope of ef is 1, however the slope of df is not 1, is 1/2, so nope, they're not perpendicular lines.

tried on you are knowing that we can't leave the picture in the graph ok no problem now you need to send it in the question group

4 inches will get you 10.16 centimeters, but you can either do 10.1 or round up to 10.2. good luck and hope this : )