In Exercises 18, find the inverse function of informally.

Introductory Chemistry 5
Determine the mass (in g) of each NaCl solution that contains 1.5 g of NaCl. (a) 0.058% NaCl by mass (b) 1.46% NaCl by mass (c) 8.44% NaCl by mass

Introductory Chemistry 5
Calculate the freezing point of a water solution at each concentration. (a) 0.85 m (b) 1.45 m (c) 4.8 m (d) 2.35 m

Physics for Scientists and Engineers: A Strategic Approach with Modern Physics 3
Problem 61P a. Your goal in laboratory is to launch a ball of mass m straight up so that it reaches exactly height h above the top of the launching lube. You and your lab partners will earn fewer points if the ball goes too high or too low. The launch tube uses compressed air to accelerate the ball

Physics: Principles with Applications 7
Problem 1COQ Two identical tiny spheres have the same electric charge. If their separation is doubled, the force each exerts on the other will be (a) half. (b) double. (c) four times larger. (d) one-quarter as large. (e) unchanged.

Sears and Zemansky's University Physics with Modern Physics 13
Problem 36E The following measurements were made on a Thyrite resistor: I (A) 0.50 1.00 2.00 4.00 Vab (V) 2.55 3.11 3.77 4.58 (a) Graph Vab as a function of I. (b) Does Thyrite obey Ohms law? How can you tell? (c) Graph the resistance R = Vab/I as a function of I.

Myers' Psychology for AP 2
Which of the following is a positive correlation? a. As study time decreases, students achieve lower grades. b. As levels of self-esteem decline, levels of depression increase. c. People who exercise regularly are less likely to be obese. d. Gas mileage decreases as vehicle weight increases. e. Repea

Calculus: Early Transcendentals 9
A rechargeable battery is plugged into a charger. The graph shows C(t), the percentage of full capacity that the battery reaches as a function of time t elapsed (in hours). (a) What is the meaning of the derivative C(t)? (b) Sketch the graph of C(t). What does the graph tell you?