Tamara earns $2,050 each month.
she spends $1,315 of the amount she earns. the rest of the money is deposited to her savings account.
how many months until tamara has deposited more than $2,500 in her savings account?

3 months 
$2,050-$1,315=735
repeat this two more times and add all three 735 together to get 2,905
making your answer 3 months

If you need an equation, it would be y=2x+8, y would be how long it grew, x being weeks.if you need how long he was asleep, it would be 4 weeks if he started with no beard, the equation would be x=8÷2if he did have a beard before hand, the equation would be 2w+x=8