All the rungs of a ladder are parallel and the top rungs is perpendicular to a side of the ladder. what conclusion can be reached

All rungs are perpendicular to a side of a ladder.

Step-by-step explanation:

The problem tells us that ALL the rungs of a ladder are parallel.

It also tells us that the top rung (which is a subset of all the rungs) is perpendicular to a side of the ladder.

But if this top rung is perpendicular to a side but we know that ALL rungs are parallel, then this top rung is also parallel to the other ones and therefore, all the other rungs are also perpendicular to a side of a ladder.

18.75x + 150 = 600; Clarissa’s sister will have $150 left to pay after 24 weeks.

Step-by-step explanation: The initial cost is 600 dollars and she has a payment plan of 18.75 dollars per week. This means she has 18.75 times x number of weeks to pay off the entire 600 dollars. Her payment plan can be expressed as follows;

18.75x = 600

However, she wants to make her weekly payments such that at a point she would be left with an outstanding payment of 150 dollars. In other words she wants to know when her weekly payment plus 150 would all be a total of 600. That is 18.75x plus 150 would be equal to 600. Our new equation based on this information is as follows;

18.75x + 150 = 600

18.75x = 600 - 150

18.75x = 450

Divide both sides of the equation by 18.75

x = 24

Hence after paying 18.75 dollars for 24 weeks (450 dollars) she would still have 150 dollars left unpaid.

Therefore the correct equation is;

18.75x + 150 = 600