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| PAGE: 38 | SET: Exercises | PROBLEM: 41 |
Jamie wants to be able to run at least the standard marathon distance of 
.
A good rule for training is that runners generally have enough endurance to finish a race that is up to 
times his or her average daily distance.
a.
The length of her current daily run is 
.
write an inequality.
Let 
represents be the distance.
The inequality is 
.
b.
Solve the inequality.
(Original inequality)
(Distributive property: 
)
(Subtract 
from each side)
(Apply additive inverse property: 
)
(Subtract: 
)
(Divide each side by )
(Cancel common terms)
Jamie should increase the distance of her average daily run by at least 
.
Her average daily run by at least 
.
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