Topic Test Answers

Medical researchers have determined that for exercise to be beneficial, a person’s desirable heart rate, R, in beats per minute, can be approximated by the formulas for women for men, where a represents the person’s age. What would the desirable heart rate be for a 46 year old woman?

Identify the independent and dependent variable of the following graph. Indicate whether the graph rises, falls, or is constant. A person’s core body temperature () in relation to time of day

Which of the following graphs represent a function?

Identify the graph that displays the altitude of a skydiver as he is taken up in a plane and then jumps. a. c. b. d. Please select the best answer from the choices provided

The weights and heights of six mathematics students are given in the following table: Weight (in pounds) Height (in centimeters) 165 172 123 157 212 183 175 178 165 163 147 167 In the statement, “Weight is a function of height,” which variable is the input and which is the output?

Use the symbolic form of the gas cost of fill-up function, , to evaluate and complete the following table. In addition, what would be the practical range of this function? Number of Gallons of Gas Needed, g Cost of Fill-up, f(g) 0 5 10 15 20

The formula is used when calculating:

Give the domain and range.

A line graph would be useful for: