Which is the correct algebraic expression for the following phase? 2.5 times a many pages​

Rewrite the following quadratic functions in intercept or factored form. show your work. y = 4x^2 - 19x- 5

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?

1.based of the diagrams what is the the value of x? 2.how would you verify your answer for x