Loading…
Example 2.3 from Prealgebra, 2.1 Use the Language of Algebra
Use the Language of Algebra: example 2.3
The information in Figure 2.2 compares the fuel economy in miles-per-gallon (mpg) of several cars. Write the appropriate symbol in each expression to compare the fuel economy of the cars.
Figure
2.2
(credit: modification of work by Bernard Goldbach, Wikimedia Commons)
- ⓐ MPG of Prius_____ MPG of Mini Cooper
- ⓑ MPG of Versa_____ MPG of Fit
- ⓒ MPG of Mini Cooper_____ MPG of Fit
- ⓓ MPG of Corolla_____ MPG of Versa
- ⓔ MPG of Corolla_____ MPG of Prius
Work it out on paper first. Then open the solution one step at a time, and stop as soon as you can finish on your own.
Solution
ⓐ MPG of Prius____MPG of Mini Cooper Find the values in the chart. 48____27 Compare. 48 > 27 MPG of Prius > MPG of Mini Cooper ⓑ MPG of Versa____MPG of Fit Find the values in the chart. 26____27 Compare. 26 < 27 MPG of Versa < MPG of Fit ⓒ MPG of Mini Cooper____MPG of Fit Find the values in the chart. 27____27 Compare. 27 = 27 MPG of Mini Cooper = MPG of Fit ⓓ MPG of Corolla____MPG of Versa Find the values in the chart. 28____26 Compare. 28 > 26 MPG of Corolla > MPG of Versa ⓔ MPG of Corolla____MPG of Prius Find the values in the chart. 28____48 Compare. 28 < 48 MPG of Corolla < MPG of Prius
Your turn
The book's Try It right after this example: same idea, new numbers. Only the answer is given.
Use Figure 2.2 to fill in the appropriate
- ⓐ MPG of Prius_____MPG of Versa
- ⓑ MPG of Mini Cooper_____ MPG of Corolla
How did it go?