A plumber charges a service fee of $40 plus $25 per hour for labor. Write a function rule for the total cost of hiring the plumber for a job that takes x hours. How much would it cost to hire the plumber for a job that takes 4 hours?

What is the best way to classify each equation? 22-3x+7x=4 (x+5) A. identity B. contradiction C. neither 6 (2x-3=3 (3-5), A. identity B. contradiction C. neither 6x-14=2 (3x-7), A. identity B. contradiction C. neither 6x+3 (x-4) = 8 (x-3) A.

If the actual distribution of tusk lengths does not match the ones predicted with the H-W equation, it may indicate that natural selection is acting on this population and causing the most beneficial phenotype to increase in abundance.

Multiply. (2.5*10-10) (7*10-6) Express your answer in scientific notation. 1.75*1016 1.75*10-15 1.75*10-16 1.75*10-17

There are 18 students in Mr. Alvarez's art class. Throughout the year, every student must pair up with every other student to complete a project. How many projects will be finished? A. 149 projects B. 153 projects C. 171 projects D. 135 projects

Rayza buys 6 simialar notebooks for $15. how much does she pay for each notebook?

A dealer paid 10000 for a boat at an auction. At the dealership, a salesperson sold the boat for 30% more than the auction price. The salesperson received a commission of 25% of the difference between the auction price and the dealership price.

Bill reads 1/5 of a book on Monday he reads 2/3 of a book on Tuesday if he finish reading the book on Wednesday what fraction of the book did he read on Wednesday

Adding and Subrtracting Fractions. Solve each problem. Write your answer as a mixed number (if possible) 5) 4 2/7 - 2 1/5 6) 5 7/8 + 11/4 7) 5/8 - 2/5 8) 16/5 + 2 1/2

Which of the following functions is quadratic? a. f (x) = 5/x-1 b. f (x) = 2^2 c. 7x (x+3) d. f (x) = 3 (4-x)

A bag contains 120 marbles. Some are red and the rest are black. There are 9 marbles for every black marble. How many red marbles are in the bag?