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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