Solve the rational inequality. Write the solution set in interval notation.
-A retailer knows that n games can be sold in a month if the price is 20 - 0.3n dollars per game. If he buys each game for $2, and if he wishes to make a profit of at least $240 per month on sales of this
Game, how many games must he sell each month?
A) $20 \leq n \leq 40$
B) $20 \leq n \leq 60$
C) $20 \leq n \leq 20$
D) $20 \leq n \leq 30$

Question

Solve the rational inequality. Write the solution set in interval notation.
-A retailer knows that n games can be sold in a month if the price is 20 - 0.3n dollars per game. If he buys each game for $2, and if he wishes to make a profit of at least $240 per month on sales of this
Game, how many games must he sell each month? 
A) $20 \leq n \leq 40$
B) $20 \leq n \leq 60$
C) $20 \leq n \leq 20$
D) $20 \leq n \leq 30$

Quizplus · Accepted Answer

The retailer's profit is given by the expression 0.3n(20 - 0.3n) - 2n. Setting this expression greater than or equal to 240 and solving for n gives 20 ≤ n ≤ 60.

Solve the Rational Inequality 20≤n≤4020 \leq n \leq 4020≤n≤40 B) 20≤n≤6020 \leq n \leq 6020≤n≤60

Solve the Rational Inequality $20 \leq n \leq 40$ B) $20 \leq n \leq 60$