Mr. Ramirez orders drumsticks and sheet music for a group of students. One pair of drumsticks costs $1.50, and the sheet music costs $3.50. He has z students. What does the expression 1.5z + 3.5z represent?

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?