The total number of books is 9 books + 7 books = <<9+7=16>>16 books.
The cost of the books is $11/book × 16 books = $<<11*16=176>>176.
The cost of the magazines is $1/magazine × 3 magazines = $<<1*3=3>>3.
Whitney spent $3 + $176 = $<<3+176=179>>179 in all.
#### 179