Math 138 Practices

  1. If MATH.

    1. Sketch the function $f$ step by step. (Keep track of $(1,0)$ and the vertical asymptote.]

    2. Find the inverse function for $f.$

  2. A model for the number of people $N$ in Radford University community who have herd a certan rumor is
    MATH

    1. Solve $d$ in terms of $N.$

    2. How many days will elapse before $1000$ students have heard about the rumor?

    3. How many days will elapse before $7000$ students have heard about the rumor?

  3. Psychologists sometimes use the function
    MATH
    to measure the amount $L$ learned at time $t$ (in minutes).

    1. How long will it take to learn $200$ words?

    2. Approximately how many words will the student have learned after $10$ minutes.

  4. Solve the folllowing equations:

    1. MATH

    2. MATH.

    3. MATH.

This document created by Scientific WorkPlace 4.0.