Question

There is a relationship between the number of hours a plumber works and the amount of money he earns. The plumber earns $60 for every 2 hours he works. Which statement about the relationship and the amount of money the plumber earns is true?

Practice
A
The number of hours the plumber works is the independent variable in the relationship, and he earns $270 for 9 hours of work.

B
The amount of money the plumber earns is the dependent variable in the relationship, and he earns $540 for 9 hours of work.

C
The amount of money the plumber earns is the independent variable in the relationship, and he earns $540 for 9 hours of work.

D
The number of hours the plumber works is the dependent variable in the relationship, and he earns $270 for 9 hours of work.

Answer 1

Explanation:

number of hours worked 2 = money earned $60,

so we can conclude that

the money he earned depend on the hours worked (independent variable) and that

number of hours worked 1 = money earned $30

A. True

hours worked IS the independent variable

9 hours of work = 9*$30 = $270 IS correct

B. False

money earned IS the dependent variable

9 hours of work is NOT $540

C. False

the money earned is NOT independent

for 9 hour will NOT earn $540

D.True

the number of hours IS dependent variable

the 9 hours of work IS earning $270