Which of the following is the best buy? 3 pairs of pants for $120 5 pairs of pants for $150 2 pairs of pants for $55 * A. 5 pairs of pants for $150
B. 3 pairs of pants for $120
C. They are the same
D. 2 pairs of pants for $55

A. 5 pair of pants for $150

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)