You are shipping a box that weighs 5 pounds. Shipping charges are listed by ounces at the local mail center. The first ounce costs you $0.35 plus an additional $0.10 for every ounce (or part of an ounce) over the first ounce. What is the cost to ship the package in dollars and cents? a. $7.90 b. $0.45 c. $8.25 d. $36

C

Step-by-step explanation:

First you must know that there are 16 ounces in 1 pound so the amount of ounces in 5 pounds would be 80 ounces so first you would take out one ounce for the $0.35 and would then have 79 ounces. After that you would multiply 79 by .10 to get 7.90 then add the .35 to that to get

8.25. So the answer is c.

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)