If prices increase at a monthly rate of 2.5%, by what percentage do they increase in a year?

Let the price initially is $100

And it is increasing per month at a rate of 2.5% , or we can say 0.025

Now applying the formula

where A is amount( final value) , P is initial value , r is rate , and n is the number of months.

Now we have to calculate for 1 year it means , n=12

So plugging all the values we get

By plugging in calculator we get

A=134.4889

It means Increase in price in 1 year = 134.4889 - 100 = 34.4889

So In percent = 34.4889%

In a year it increases at 34.4889%

which expression can be used to convert 80 us dollars (usd) to australian dollars (aud)?

1 usd = 1.0343 aud

1 aud = 0.9668 usd

step-by-step explanation:

sorry just need the points

well there are two answers for that.

1: you need 120 ones then that will equal up to 120.

2: you could also do one 100 and 2 tens.

those are the answers that i have thought of.