How much money is in Joe's savings account after 3 years if he deposited $400 at the beginning of the year and the account pays 4% annual simple interest?

$448

Step-by-step explanation:

To calculate Joe's savings, we can use the formula for simple interest:

P = Po*(1+r*t)

Where P is the final value, Po is the inicial value, r is the interest and t is the time in years.

So, In our problem, we have that Po = 400, r = 4% and t = 3, then we can find P:

P = 400*(1+0.04*3)

P = 400*1.12 = $448

Joe has $448 in his savings.

let y equal to

the total fare and x is the mile of taxi ride. so the equation is

y = 0.55x + 1.75

since susie has

$10 to spend for a taxi cab, so he can have

10 = 0.55x +

1.75

x = 15 miles of

taxi ride

so the system of

inequality is

10 < 0.55x +

1.75

x > 2

3100

step-by-step explanation: