1. today amy’s bank account contains $116.85. yesterday she made a deposit of $32.50. what was the bank account balance before amy made the deposit? a) write an equation that models the problem b) solve the equation. c) write the answer in the form of a sentence.

She started out yesterday with $84.35 in her bank account.

Step-by-step explanation:

She starts out with x dollars in her bank account:  x

To this amount she added $32.50, reaching a total balance of $116.85:

x + $32.50 = $116.85

Solving this by subtracting $32.50 from both sides, we get x = $84.35.

t > 8

Step-by-step explanation:

Given that :

Initial volume = 16 litres

Addition rate = 4 litres per minute

Target volume > 48 litres

Let number of minute for which water is added to achieve these = t

Mathematically,

Initial volume + (addition rate * t) > target volume

16 + 4t > 48

Collect like terms

4t > 48 - 16

4t > 32

Divide both sides by 4

4t/4 > 32/4

t > 8

Laura will need add water at 4 Litre per minute rate for more than 8 minutes