Answer:
1575 calories
Step-by-step explanation:
Every [tex]\frac{1}{2}[/tex] an hour while riding her bike, Susan burns 450 calories.
If the rate remains constant then within one hour riding her bike Susan will burn ( 450 × 2 ) = 900 calories.
Now, it is asked to calculate the number of calories that Susan burns in [tex]1\dfrac{3}{4}[/tex] hours bike riding.
Here, [tex]1\dfrac{3}{4} = \dfrac{7}{4}[/tex] hours
Therefore, in [tex]\dfrac{7}{4}[/tex] hours she will burn [tex]\dfrac{900\times 7}{4} = 1575[/tex] calories. (Answer)
