Michael goes to the fair with 3 friends. they each ride 4 rides at $4.25 per ride. two of them buy cotton candy for $3.50 each. michael buys a slice of pizza for $4.50, and his friend has a hot dog for $4.00. each of the 4 friends purchases a drink for $2.50. what is the total amount they spent at the fair?

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?