Thor invests some $20,000 in an account earning 8% interest each year. write an inequality that could be used to determine the number of years, n, that it will take for the account to have at least $27,000.

The required inequality is .

Step-by-step explanation:

The principle amount is $20,000.

The interest rate is 8% per year.

The formula of compound interest annually is

Where, P₀ is principle amount, r is rate and n is time in years.

The amount is

We need the amount at least $27,000. It means $27000 or more than $27,000.

Therefore the  required inequality is .

its the second choice.

step-by-step explanation:

the elements in the range will be 7 less than the elements in the domain.

1,407.5 hours

step-by-step explanation:

we first convert all the time to hours and then sum them up.

there are 24 hours in 1 day, in 58 days, there are 24 x 58 = 1,392 hours.

there are 60 minutes in 1 hour, thus, 30 minutes will be equivalent to 30 / 60 = 0.5 hours.

therefore, the number of hours it will take mercury to complete a full rotation is 1,392 + 15 + 0.5 = 1,407.5 hours