I would guess it would be
7 and -7
Let's find out.
David needs to score an average of 145 across all four games, so first we do:
145 × 4 = 580
Then we add all the scores he currently has:
139 + 143 + 144 = 426
Then we subtract 426 from 580 to find out how much he needs to score for his fourth:
580 - 426 = 154
David needs to score 154 on his 4th game to have an average score of 145 for all 4 games.
It would be simplified to 20
Here is the answer
I can’t seem to do the symbols here so the answer is in the picture.
This is true. If you count the number of lbs, you get 16 and if you count the number of dollars in the same length, you get $4.
