Sara worked 24 hours last week. joan worked for hours less than sara, and erin worked half as many hours as joan. how many hours did sara, joan, and erin work last week?

What situation is an example of an observational study

Afarmer sells 9.5 kilograms of apples and pears at the farmer's market. 4/5 of the weight is the apples and the rest is the pears. how many kilograms of pears did she sell at the farmers market

Write an algebraic expression to match each statement a. four less than 8 times a number b. twice the difference of a number and six c. nine from a number squared