80
The question implies that you're counting by tens & the number comes after 70 and before 90. This is the only number that fits this description.
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:

To explain The mathematical basics of shapes and figures.
Answer:
The amount deducted for Ms.Everett‘s paycheck for her health insurance premium is $307.6
Step-by-step explanation:
given information:
annual insurance = $12304
employer pay annually = 70%
first we calculate the annual insurance paid by the employer
employer paid annual insurance = 70% x $12304
= $8612.8
then, we calculate the insurance paid by Ms. Everett annually
Ms. Everett paid annual insurance = $12304 - $8612.8
= $3691.2
thus, amount is deducted for Ms.Everett‘s paycheck for her health insurance premium
Ms. Everett's paycheck deduct = $3691.2/12
= $307.6