## Intermediate Algebra (6th Edition)

-14$y^{4}$
1. Multiply the numerals: 7 x -2 = =14 2. Add the exponents of the variables with the same base: 1 + 3 = 4, so y x $y^{3}$ = $y^{4}$ 3. Combine the numerals and the variables: -14$y^{4}$