An online music service lets customers download an unlimited

An online music service lets customers download an unlimited number of songs $0.25 each after paying a monthly membership fee of $5.00. The total amount of money a customer spends on music in dollars in a single month can be found using function y = 0.25x + 5. What does the variable x represent in this function? The total amount of money the customer spends on music each month the number of songs the customer downloads each month the number of customers that use the music service The cost of downloading one song Which expression is equivalent to 3c (1/3 d - 9) - 7 (c + 1) + d (c + 4)? 2cd - 34c + 4d - 7 2cd - 7c - 4 2cd + 34c + 4d + 7

Solution

26. Since the music service, in addition to the fixed membership fee of $ 5, charges a fee of $ 0.25 for downloading each song, hence x represents the no. of songs downloaded each month. Option B is the correct answer.

27.We have 3c( d/3 -9) -7(c+1) +d(c+4) = cd -27c -7c -7 +cd +4d = 2cd -34c +4d -7.. Thus, option A is the correct answer.