Answer:

Needed 7 weeks
Step-by-step explanation:
Let x be the number of weeks.
<u>Nick</u>
- weighs 160 pounds;
- is gaining about 3 pounds per week;
- gains 3x pounds in x weeks;
- weighs 160 + 3x pounds after x weeks.
<u>Adam</u>
- weighs 195 pounds;
- is losing about 2 pounds per week;
- loses 2x pounds in x weeks;
- weighs 195 - 2x pounds in x weeks.
The equation that can be used to find the number of weeks that it will take them to weigh the same amount is

Solve this equation:

Answer:
Solve for n:
28 = n
Hint: | Reverse the equality in 28 = n in order to isolate n to the left hand side.
28 = n is equivalent to n = 28:
Answer: n = 28
Step-by-step explanation:
Answer:
-3/5 = -0.6
-5/8 = -0.625
Step-by-step explanation:
I most definitely did not use a calculator.
55-46.75= 9.25
the sales discount is $9.25