Okay, okay .....I think I got this one right (I've thought that before and was wrong) but no...I really, really, for real think I may have, maybe got this one right (A and B). Could someone be a life saver by checking and sharing your honest input? I can handle the critique if I'm wrong, just can't handle a failing grade. :wink:
Problem: To save the environment, the Lion's Den Cafeteria sells an empty reusable 24-ounce plastic mug to students for $2.99. Using the mug, a student can get a 24 ounce soft drink for a reduced price of 69 cents.
a. Write a rational expression for which the value of the expression is the average cost per drink and n is the number of times the mug is used.
2.99 + .69n= cost per drink
n
b. If a student buys the mug and uses it only once, then what is the cost for that one drink?
2.99 + .69n = cost per drink
n
2.99 + .69 (1)
1
3.68 = 3.68 is the cost for one drink
1
c. If the regular price of a 24 ounce soft drink is 89 cents, then when does the student start saving money?
This one I do not know how to answer unless from trial and error on a calculator, which turned out to be anywhere from
599-600 or > depending on how the numbers are rounded off. How would it be evaluated without the n (number) already in it?
2.99 + .89 (600) = 0.894
600
The cost of a drink would equal 89 cents when a student reached their 600th drink?
Thank you much for your valuable time and much appreciated shared knowledge.
Problem: To save the environment, the Lion's Den Cafeteria sells an empty reusable 24-ounce plastic mug to students for $2.99. Using the mug, a student can get a 24 ounce soft drink for a reduced price of 69 cents.
a. Write a rational expression for which the value of the expression is the average cost per drink and n is the number of times the mug is used.
2.99 + .69n= cost per drink
n
b. If a student buys the mug and uses it only once, then what is the cost for that one drink?
2.99 + .69n = cost per drink
n
2.99 + .69 (1)
1
3.68 = 3.68 is the cost for one drink
1
c. If the regular price of a 24 ounce soft drink is 89 cents, then when does the student start saving money?
This one I do not know how to answer unless from trial and error on a calculator, which turned out to be anywhere from
599-600 or > depending on how the numbers are rounded off. How would it be evaluated without the n (number) already in it?
2.99 + .89 (600) = 0.894
600
The cost of a drink would equal 89 cents when a student reached their 600th drink?
Thank you much for your valuable time and much appreciated shared knowledge.