Peggy worked 20 2/3 hours over three days last week. she worked the same number of hours each day. how many hours did peggy work each day? by writing an equation and solving.

The cost of using a service is $0.25 per min. what equation correctly represents the total cost c, in dollars, for d days of use?

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

Acertain drug is made from only two ingredients: compound a and compound b. there are 3 millimeters of compound a used for every 4 millimeters of compound b. if a chemist wants to make 693 milliliters of the drug, how many milliliters of compound a are needed?