To write the polynomial in standard from, the degrees of the monomials need to decrease from left to right. Reorder the monomials to get 15y8 – 7y3 + y.
The polynomial has three terms, which makes it a trinomial. The monomial with the greatest exponent is 15y8, an eighth degree term. This makes the expression an eighth degree trinomial.
The option c is the answer because 2p=p (1.07)^x 2=1.07^x Solve for x X=log(2)÷log(1.07) x=10 years the amount will be doubled after 10 years But your option says the investment will (more) than double with (12) years So it's correct
Your surface area is: S=x^2+4xh=84 square inches and h=2 inches; so you get: x^2+(4×2)x=84 x^2+8x-84=0 qhich is a quadratic equation. Using the quadratic formula you get two results for x: x1=-14 and x2=6 choose the second (positive)