When I think of a number, double it, then add seven, I get 23. Determine the number that I
first thought of.​

8

Step-by-step explanation:

23 - 7

= 16

16 ÷ 2

= 8

u thought of 8 ;)

number maybe 8...

Step-by-step explanation:

because if you will double 8 then you will get 16 and if you will at 16 with 7 you will get 23

i think the amount would be $140.62

step-by-step explanation:

points a and b are equidistant from the desired line, so the line you find by using them will go through point r.

using points other than a and b will give the desired line only if they are equidistant from r. if they are randomly located, the perpendicular line you create will not necessarily go through point r, hence will not be a solution to the problem.