Question

Can someone please give me the answers I will mark you brilliant as soon as it pops up

Answer 1

I believe 80 sorry if wrong

Answer 2

1.)
`=50x+30y`

2.? The first one

Explanation:

1.)
`\mathrm{Apply\:the\:distributive\:law}:\quad \:a\left(b+c\right)=ab+ac`,
`a=10,\:b=5x,\:c=3y`

`=10\cdot \:5x+10\cdot \:3y`
`=50x+30y`

2.) The first one