The area of a rectangle is 42 square inches . the length is 7 inches . what is the perimeter of the rectangle ?

Which of the following is true for the relation f(x)=2x^2+1

Which shows one way to determine the factors of 4x3 + x2 – 8x – 2 by grouping?

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?