The length of two sides of a triangle are shown below:
Side 1: 8x^2 - 5x - 2
Side 2: 7x - x^2 + 3
The perimeter of the triangle is
4x^3 - 3x^2 + 2x - 6.

Part a: what is the total length of the two sides, 1 and 2, of the triangle?

Part b: what is the length of the third side of the triangle?

Part c: are the answers for part a and part b an example demonstrating that polynomials are closed under addition and subtraction? Justify your answer.

The depreciation per unit for a company

Apatient is given 50 mg dose of medicine the medicines effectiveness decreases every hour at a constant rate of 40% what is the exponential decay function that models this scenario how much medicine will be left in the patients system after 2 hours

Ariana starts with 100 milligrams of a radioactive substance. the amount of the substance decreases by 20% each week for a number of weeks, w. the expression 100(1−0.2)w finds the amount of radioactive substance remaining after w weeks. which statement about this expression is true? a) it is the difference between the initial amount and the percent decrease. b) it is the difference between the initial amount and the decay factor after w weeks. c) it is the initial amount raised to the decay factor after w weeks. d) it is the product of the initial amount and the decay factor after w weeks.