. Your friend's new personal trainer suggests that she supplement with no more than 20 grams of creatine but at least 20 grams of L-glutamine and 42 grams of BCAAs each week. She is thinking of combining Xtend and Strongevity to create a week's supply that meets her new trainer's specifications. (See the following table):

Creatine (grams)

L-Glutamine (grams)

BCAAs (grams)

Cost ($)

Xtend

(SciVation)

0

2.5

7

1.00

Strongevity

(Bill Phillips)

2.5

1

0

1.20