Question

A sports club needs to raise at least $500 by selling chocolate bars for $2.50 each. Sebastian wants to know how many chocolate bars, c, the sports club must sell in order to reach its goal.

Which of the following must be true about the inequality and the resulting graph? Select three options.
The inequality should be written as 2.50 c greater-than-or-equal-to 500.
The inequality should be written as 2.50 c less-than-or-equal-to 500.
The circle is open.
The circle is closed.
The arrow points right.

Answer 1

Correct choices:
- The inequality should be written as 2.50 c greater-than-or-equal-to 500.
- The circle is closed.
- The arrow points right.

Reason: 2.50c ≥ 500 → c ≥ 500/2.50 = 200. So c is at least 200 (closed dot at 200) and values greater than 200 (arrow to the right).