Ahummingbird's heart beats 250 times in 10 seconds. use a proportion to find how many times it's heart beats in 32 seconds

Reinel saves 30% of every pay check. his paycheck last week was 560$. how much did reniel save last week?

When steve woke up. his temperature was 102 degrees f. two hours later it was 3 degrees lower. what was his temperature then?

1. according to the internal revenue service, the mean tax refund for the year 2007 was $2,708. assume the standard deviation is $650 and that the amounts refunded follow a normal probability distribution. a. what percent of the refunds are more than $3,000? b. what percent of the refunds are more than $3,000 but less than $4,000? c. what percent of the refunds are less than $2,000?