Francesca tried to evaluate an expression. Here is her work: 3(5)2 - 18 = 3
= 3(25) - 18 = 3
Step 1
= 75 - 18 = 3
Step 2
= 57 - 3
Step 3
= 19
Step 4

Identify the type of observational study described. a statistical analyst obtains data about ankle injuries by examining a hospital's records from the past 3 years. cross-sectional retrospective prospective

It is saturday morning and jeremy has discovered he has a leak coming from the water heater in his attic. since plumbers charge extra to come out on the weekends, jeremy is planning to use buckets to catch the dripping water. he places a bucket under the drip and steps outside to walk the dog. in half an hour the bucket is 1/5 of the way full. what is the rate at which the water is leaking per hour?

Which strategy is used by public health to reduce the incidence of food poisoning?