Question

Simplify (photo please help fast!)

Answer 1

D

Explanation:

given

4.2(3.9r - 5.9s) + 7.9s - 9.53r ( distribute parenthesis by 4.2 )

= 16.38r - 24.78s + 7.9s - 9.53r ( collect like terms )

= (16.38r - 9.53r ) + (- 24.78s + 7.9s )

= 6.85r + (- 16.88s ) = 6.85r - 16.88s → D