X/ / M U C H H E L P N E E D E D / /x

3. gabriela is washing cars. she charges $15 for a car wash. she paid $145 for advertising, and uses $3 worth of cleaning products on each car she washes. when will gabriela begin to make a profit?

a) write an inequality to model the problem.

b) solve the inequality. show your work.

c) answer the question from the problem.

Question

Howard

Mathematics

25 February, 12:56

X/ / M U C H H E L P N E E D E D / /x

3. gabriela is washing cars. she charges $15 for a car wash. she paid $145 for advertising, and uses $3 worth of cleaning products on each car she washes. when will gabriela begin to make a profit?

a) write an inequality to model the problem.

b) solve the inequality. show your work.

c) answer the question from the problem.

+4

Answers (1)

Know the Answer?

Damien · Answer 1

she will make a profit after the 12th car.

explanation - x (15-3) - 145>0 to find when she starts to make a profit:

So:

12x-145>0

12x>145

x>14512=12.08≈12

if x=13:

13⋅12-145=$11