Angelina has a recipe for chocolate cookies. She uses 2 1/2 cups of flour to make 4 dozen cookies. Luke will follow the same recipe. He will make ddozen cookies using f cups of flour. Which of these equations represents the relationship between
d and f?

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?