1. The future value of a simple-interest investment of P dollars at an annual interest rate r for t years is given by the expression P + Prt. Factor this expression?

2. When medicine is administered, the reaction (measured in change of blood pressure or temperature) can be modeled by (that is, described by)

where c is a positive constant and m is the amount of medicine absorbed into the blood.* Factor the expression for the reaction.
3. From the formula for reaction to medication given in Problem 60, an expression for sensitivity S can be obtained, where
S = cm - m2
Factor this expression for sensitivity?
4. Squares of side x are cut from four corners of an 8-by-8-inch piece of cardboard and an open-top box is formed (see Figure 0.10). The volume of the box `is given by 64x - 32x2 + 4x3. Factor this expression.
Figure 0.10

Transcribed Image Text:

т? т 3 ст* R =