Answer:
$900
Step-by-step explanation:
If the $810 is the price after 10% discount that means
$810 is 90% of the original price
So we divide 810 / 90% or 810 / 0.9
to get $900 as final price
campers = y and counselors = x, 1 counselor to 5 campers
B: y=3x-1 because the slope is 3 and passes thru y axis at -1