<div style="margin: 0in 0in 0pt">3-Q2
On saturday morning, Malachi will begin a camping vacation and he will return home at the end of the first day on which it rains. If on the first three days of the vacation the probability of rain on each day is 0.2, what is the probability that Malachi will return home at the end of the day on the following Monday?
A. 0.008 B.0.128 C.0.488 D.0.512 E.0.640
If x and k are integers and (12^x)(4^2x+1)=(2^k)(3^2), what is the value of k?
A.5 B.7 C.10 D.12 E.14
<div style="margin: 0in 0in 0pt">How many seconds will it take for a car that is traveling at a constant rate of 45 miles per hour to travel a distance of 22 yards? (1 mile=1160 yards)
A.8 B.9 C.10 D.11 E.12
提问时间：2010-01-13 16:31:38提问者： Kathy00097 [初中生]
The 3 day vacation would start on Saturday. hence the 3 days will be Saturday, Sunday and Monday.
DAY Saturday Sunday Monday
Hence the required probability is 0.8*0.8*.2 = 0.128
回答时间：2010-01-14 15:31:58 回答者：zsk_koo [知识堂达人]