The half-life of a certain radioactive substance is 14 days. There are 2.5 grams of the substance initially. Type an expression for the amount of substance as a function of t. When will there be less than 1 g remaining?

Explain step-by-step how to simplify -5(2x – 3y + 6z – 10).

The perimeter of a rectangle is 42 inches. if the width of the rectangle is 6 inches, what is the length

The input to the function is x and the output is y. write the function such that x can be a vector (use element-by-element operations). a) use the function to calculate y(-1.5) and y(5). b) use the function to make a plot of the function y(x) for -2 ≤ x ≤ 6.