If you can buy 7 oranges for $14.28 how much would one orange cost?

How do i do this? i don’t understand

Aline passes through 3,7 and 6,9 what equation represents the line

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?