30% of is 90. enter the unknown value that makes this statement true

The mean temperature for the first 4 days in january was 7°c. the mean temperature for the first 5 days in january was 5°c. what was the temperature on the 5th day?

The distance around the lake is 2 kilometers. ifelena wants to run 14 kilometers this week, howmany laps must she run around the lake

The vet charges $45 for an office visit and $10 for each vaccination your dog needs. write an eaquation