AVDYHY I NEED HELP 8 9 and 10 ASAP PLEASE

What is the simplified expression for 6(2(y+x))

Aswim teacher sells lesson packages. the best deal has the highest ratio of lessons to total cost.swim lesson packagesnumber of lessons total cost$10$4010 1 $8015$80which package is the best deal? l lesson for $105 lessons for $4010 lessons for $8015 lessons for $80mark this and returnsave and exit

The step function g(x) is defined as shown.what is the range of g(x)? ***answer choices in picture.