Question

Marge runs an ice cream parlor. Her specialty is triple chocolate sundaes. She can prepare 1 sundae every 2 minutes, and she earns $1.20 for each sundae she makes. If she just makes sundaes for a single shift of at most 4 hours and at least 2 hours, which function relates her earnings to the number of minutes she works?

Answer 1

Answer: B

f(x) = 1.2(x/2) if 120 ≤ x ≤ 240

Explanation:

took the test on plato :)

Answer 2

First, find the relationship between the number of minutes, x, she works and the number of sundaes,s, she makes

She makes s = [1sundae / 2 minutes]* x = x/2

Now find the relation of the earnings, E, with the number of sundaes she works

E = $1.20* s = 1.2s.

And finally, relate E with the number of minutes she works, x: E = 1.2 [ x/2]

E = 0.6x

Hope this helps!