Tina left $1,500 in her savings account for 3 months at 1 ¾ % simple interest. how much interest did she earn?

$ 65.34 ( approx )

Step-by-step explanation:

Since, the amount after getting simple interest is,

Where, P is the principal amount,

r is the rate per period

t is number of periods,

Here, A = $ 1,500,

t = 3 months,

Annual rate =

So, the monthly interest =

By substituting the values in the above formula,

Hence, the interest she earned is,

see explanation

step-by-step explanation:

since the sequence is geometric there is a common ratio r between consecutive terms, that is

r = 4 ÷ - 2 = - 2

r = - 8 ÷ 4 = - 2

r = 16 ÷ 8 = - 2

the next term - 13 must be incorrect as it should be - 32 for the sequence to be geometric.

the first 4 terms are therefore geometric with common ratio r = - 2

step-by-step explanation:

you can add the two numbers and divide the result by 2. or you can find the gap between the two numbers and add half of this to the smaller number.