Peter went to a department store and paid $59.59 per fire alarm for seven fire alarms and a flat rate fee for installation for a total of $452.98. Ashley went to another store and paid $58.29 per fire alarm for seven fire alarms plus a per fire alarm installation fee for a total of $453.39. What is the difference in the amounts they paid in installation charges? a.$10.51
b.$9.61
c.$10.61
d.$9.51

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)

the least value out of the data shown is 5, maybe if you post a picture with it i could a little more.

step-by-step explanation:

found it xd it ok yt