Jennifer earns $5.50 an hour for babysitting. edward earns 1.8 times as much for mowing lawns. explain how you can tell whose hourly rate is higher without calculating. then find how many hours each one has to work to make at least $50.00

Ascientist has 50 grams of a radioactive element. the amount of radioactive element remaining after t days can be determined using the equation (1) after two days the scientist receives a second shipment of 50 grams of the same element. the equation used to represent the amount of shipment 2 remaining after t days is 10) - 50 which of the following is an equivalent form of the expression for the amount remaining in shipment 2? what’s the answer?

1) prove that 731^3−631^3 is divisible by 100 2) prove that 99^3−74^3 is divisible by 25

My hour hand points between the 8 and the 9 in 35 minutes it will be the next hour. what time is it ?