The average lifetime of a certain new cell phone is 6 years. The manufacturer will replace any cell phone failing within 5 years of the date of purchase. The lifetime of these cell phones is known to follow an exponential distribution. What is the decay rate? (Enter your answer as a fraction.)

Aswimming pool has an input pump for filling the pool and an output pump for emptying the pool. the input pump can fill the pool in 3 hours, and the output pump can drain the pool in 5 hours. as you go to bed, the pool is full, but a neighbor’s kid turns on the output pump. at midnight, you awake to find the pool half empty. immediately, you turn on the input pump, but you are sleepy and forget to turn off the output pump. at what time will the pool become full?

Answer this question only if you know the 30 points and

Which measure is equivalent to 110 ml? 0.0110 l 0.110 l 1.10 l 11,000 l