<p>Equations – Day 5 Name ______Assignment Date ______Period ______</p><p>The number of times a cricket chirps in a minute is a function of the temperature. You can use the formula</p><p> n = 4t – 160</p><p>To determine the number of chirps, n, a cricket makes in a minute when the temperature is t degrees Fahrenheit. If you want to estimate the temperature by counting cricket chirps, it is easier to use the following form of the equation:</p><p>1 t = n + 40 4</p><p>1. At 60F, how many times does a cricket chirp in a minute?</p><p>2. What is the temperature if a cricket chirps 150 times in a minute?</p><p>3. A what temperature does a cricket stop chirping?</p><p>4. Sketch a graph of the equation with number of chirps on the x-axis and temperature on the y-axis. What information does the y-intercept give you? Equations – Day 5 Name ______Assignment Date ______Period ______</p><p>At Fabulous Fabian’s Bakery, the cost, C, and revenue, R, to make and sell N cakes per month are given by the equations below.</p><p>C = 800 + 3.20N and R = 8.50N</p><p>5. Fabian sold 100 cakes in January. What were his cost and revenue? Did he make a profit?</p><p>6. In April, Fabian’s revenue was $1105. How many cakes did he sell?</p><p>7. What was the cost of producing the number of cakes in April?</p><p>8. What is the break-even point between cost and revenue?</p><p>9. In each equation, what information do the y-intercept and the coefficient of N give you?</p><p>The maximum weight allowed in an elevator is 1500 pounds.</p><p>10. If ten children are in the elevator, how many adults can get in? Assume the average weight per adult is 150 pounds and the average weight per child is 40 pounds.</p><p>11. If six adults are in the elevator, how many children can get in?</p><p>12. Write an equation for the number of adults, A, and the number of children, C, the elevator can hold.</p>