Equations Exponential Equations I: Growth and decay by Anne E. Egger, Ph.D., Janet Shiver, Ph.D., Teri Willard, Ed.D. Reading Quiz Teach with this 1. Which graph below best represents exponential growth? Graph A Graph B Graph C Graph D 2. Which graph below best represents exponential decay? Graph A Graph B Graph C Graph D 3. Which equation below shows an exponential equation? y = mx + b y = x2 y = 2x y = 3x3 + 4 4. Each person with influenza can infect several other people. What would a graph of the total number of new infections over time show? Exponential growth Exponential decay Linear decay Linear growth Linear decay 5. After consumption, the kidneys eliminate a percentage of caffeine from the bloodstream. What would a graph of the concentration of caffeine in the bloodstream over time show? Exponential growth Exponential decay Linear growth Linear decay 6. An ice-cream shop plans to open 4 new locations each year. What would a graph of the shop openings over time show? Exponential growth Exponential decay Linear growth Linear decay 7. Riding a wave of popularity, the number of frozen yogurt shops in a county has doubled each year for four years. What would a graph of store openings over time show? Exponential growth Exponential decay Linear growth Linear decay 8. In a nuclear chain reaction, breaking one atom releases particles, each one of which can trigger another atom to break. What would a graph of new reactions over time show? Exponential growth Exponential decay Linear growth Linear decay 9. A factory emits 50 gallons of pollutant-contaminated water each day into a lake. What would a graph of the pollutant concentration of the lake over time show? Exponential growth Exponential decay Linear growth Linear decay Score Quiz
