If 10% is deducted from a bill, $58.50 remains to be paid. How much is the original bill? PLEASE NEED HELP​

1. perpendicular

2. parallel

3. perpendicular

in mathematics, a constraint is a condition of an optimization problem that the solution must satisfy. there are several types of constraints—primarily equality constraints, inequality constraints, and integer constraints. the set of candidate solutions that satisfy all constraints is called the feasible set.

hoped i'm right lol

i think its a.

hope this