The scatterplot below shows the relationship between the number of hours spent watching television the day before a test and the test scores earned by a group of students. Which equation represents the line of best fit for the scatterplot?y=−10x+50y = − 10 x + 50y=−10x+100y = − 10 x + 100y=10x−50y = 10 x − 50y=10x−100

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?