The decay rate of a certain chemical is 9.5% per year. What is its half-life? Use the exponential decay model P(t) =P, e-kt where k is the decay rate, and P, is the original amount of
chemical
years.

Type the correct answer in the box. consider the system of linear equations below. rewrite one of the two equations above in the form ax + by = c, where a, b, and c are constants, so that the sum of the new equation and the unchanged equation from the original system results in an equation in one variable.

Arectangle plot measure 20ft. by 30ft. a 3-ft.-wide sidewalk surrounds it. find the area of the sidewalk.

How many square centimeters of wrapping paper will be used to wrap the shoe box?