A new bank customer with ​$4,000 wants to open a money market account. The bank is offering a simple interest rate of 1.4​%. a. How much interest will the customer earn in 20 ​years? b. What will the account balance be after 20 ​years? a. The customer will earn ​$ in interest.

A = $1,120 B = $5120

Step-by-step explanation:

1.4/100 = 0.014

0.014 x 4000 = 56

1.4% interest on the $4,000 is $56.

56 x 20 (years) = 1,120

A= $1,120

To get B simply add 1,120 to 4000.

1,120 + 4000 = 5120

B = 5120.

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Step-by-step explanation:

21

step-by-step explanation:

54 km / hours

step-by-step explanation:

we need to convert seconds to hours

60 seconds = 1 minutes

60 minutes = 1hour

15 m         60 second   60 minutes

  * *         = 54000 meters/ hour

second     1 minute             1 hour

now we need to convert meters to km

1000 m = 1 km

54000 m       1 km

*   = 54 km / hours

hour               1000m