Answer:
84
Step-by-step explanation:
20 x 4.2=84 also Ms.Yost is a savage
Since the 7 is in front of the parentheses you must multiply it by everything inside the parentheses. 7 times X is 7X and 7 times -2 is -14. Then you need to make the X be by itself on one side, to do that you have to add 14 to -14 to make it disappear, and also add 14 to the other side, to 28. Then you divide both sides by 7 to make X be by itself.
7(x-2)=28
7X-14=28
7x=42
X=6
Answer: (6,16)
(6,2)
(-2,8)
(14,8)
The answer is 6 feet 10 inches