Question: A plumber charges a rate of $45 for each hour of work. Which of the following is true?
A) An expression that represents the amount, in dollars, that the plumber will charge for x hours of work is 45 x. At this rate, for 2 hours of work the plumber will charge $47.
B) An expression that represents the amount, in dollars, that the plumber will charge for x hours of work is 45 x. At this rate, for 2 hours of work the plumber will charge $90.
C) An expression that represents the amount, in dollars, that the plumber will charge for x hours of work is 45+x. At this rate, for 2 hours of work the plumber will charge $47.
D) An expression that represents the amount, in dollars, that the plumber will charge for x hours of work is 45+x. At this rate, for 2 hours of work the plumber will charge $90.
Correct answer: B
Grade: 6 | Topic: Expressions and Equations | Difficulty: Medium | Standard: 6.EE.B.6