answer is C
He made an error in Step 3. He should have subtracted 2 from both sides.
3: 8h+24 4: 6h+21 5: 15x+45y 6: 44h+12g
7: 7jk first box 12jm second box. 8: 9ab+13a
Basically you just want to multiply the number outside the parentheses to each number inside them.
The total cost would be:
$20 = two people- 2*20=40$
20 = guest
20*20=
400 would be the cost
9 and 1/3 because you add what she has and what she's given and subtract what she uses. You must use a common denominator. Hope this helped you!
43.99 times 7% in decimal form which is 0.07 then it equals 3.0793 and if you want how much it would coat then you add 3.0793 and 43.99 I hope that helped