Jylene and her brother had a total of $35.19 to buy school supplies. Jylene's school supplies cost $12.78. Her brother's school supplies cost slightly more than $9. About how much money did they
have left after buying school supplies?

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?