The monthly cost of downloading songs at b-Tunes is $0.99 per song. I-Music charges a
monthly fee of $10 plus an additional $0.79 per song. How many songs would you have to
download for the two plans to cost the same?

50

Step-by-step explanation:

0.99x = 10 + 0.79x

0.2x = 10

x = 10/0.2 = 50

its 69.420

step-by-step explanation:

step-by-step explanation:

the original amount doesn't ''re just looking for the time it takes for 1/2 of the substance to we have

(1/2) =)     take the ln   of both sides

ln (1/2)   = )   and we can write

ln(1/2) = ) lne     and lne   = 1     so we have

ln(1/2) = -.1092t     divide both sides by -.1092

t = ln(1/2)/-.1092 = about 6.347 days = about 6.3 days (rounded)