Concept explainers
If you pay $7 for a night light that cost $ 0.50 per year in electricity to operate , then gow much will you have spent on the night light if you operate it continuously for Y years ? Write an expression in term of Y . Evaluate your expression for the cost of the night light when y = 4 and when Y =
Want to see the full answer?
Check out a sample textbook solutionChapter 9 Solutions
Mathematics for Elementary Teachers with Activities (5th Edition)
Additional Math Textbook Solutions
Fundamentals of Differential Equations and Boundary Value Problems
Finite Mathematics for Business, Economics, Life Sciences and Social Sciences Plus NEW MyLab Math with Pearson eText -- Access Card Package (13th Edition)
Discrete Mathematics and Its Applications ( 8th International Edition ) ISBN:9781260091991
Using & Understanding Mathematics: A Quantitative Reasoning Approach (7th Edition)
Introductory Mathematics for Engineering Applications
Mathematics for the Trades: A Guided Approach (11th Edition) (What's New in Trade Math)
- The time required to empty a pool varies inversely as the rate of pumping. It took Lucy 2.5 hours to empty her pool using a pump that was rated at 400 gpm (gallons per minute). a. Write the equation of variation. b. How long will it take her to empty the pool using a pump rated at 500 gpm?arrow_forwardCrime prevention The number f(x) of incidents of family violence requiring police response appears to be related to x, the money spent on crisis intervention, by the equation f(x)=4300.005x. What expenditure would reduce the number of incidents to 350?arrow_forwardFind the slope of the line: x = —4.arrow_forward
- Graph the equation x=5 .arrow_forwardThe distance a moving body travels, d, varies directly with time, t, it moves. A train travels 100 miles in 2 hours a. Write the equation that relates d and t. b. How many miles would it travel in 5 hours?arrow_forwardFinbar bought his home for $150,000 in 2010. Property values have increased 10% every year since he has owned the home. Which of the following equations can be used to represent the price of the home x years after 2010? A.)y = 150,000(1.5)x B.)y = 150,000(1.1)x C.)y = 150,000(0.9)x D.)y = 150,000(0.5)xarrow_forward
- Elementary AlgebraAlgebraISBN:9780998625713Author:Lynn Marecek, MaryAnne Anthony-SmithPublisher:OpenStax - Rice UniversityAlgebra: Structure And Method, Book 1AlgebraISBN:9780395977224Author:Richard G. Brown, Mary P. Dolciani, Robert H. Sorgenfrey, William L. ColePublisher:McDougal Littell
- Glencoe Algebra 1, Student Edition, 9780079039897...AlgebraISBN:9780079039897Author:CarterPublisher:McGraw HillIntermediate AlgebraAlgebraISBN:9781285195728Author:Jerome E. Kaufmann, Karen L. SchwittersPublisher:Cengage LearningCollege Algebra (MindTap Course List)AlgebraISBN:9781305652231Author:R. David Gustafson, Jeff HughesPublisher:Cengage Learning