Gladys has just purchased a new home. the house was priced at $105,000, and she chose a 40-year mortgage at 5.2%. what will her total cost be?

Her total cost will be 797,661.98

Step-by-step explanation:

The total cost of the mortgage is simply the accumulated value of the loan amount, 105000 at the end of the 40 year term at an effective rate of interest  of 5.2%. We incorporate the compound interest formula; A = P(1+r)^n; A = 105000(1+5.2/100)^40 = 797,661.98

step-by-step explanation:

12: 00 p.m. to 7: 00 p.m. is a total of 7 hours.

4: 00 p.m. to 7: 00 p.m. is a total of 3 hours.

this means that from 4: 00 p.m to 7: 00 p.m. this represents 3/7 of what was lost from 12: 00 p.m. to 7: 00 p.m.

after knowing this, after doing 11,600 - 6,800 = 4,800

4,800 represents 3/7 of what was lost for 7 hours.

we then divide 4,800 by 3 which gets 1,600.

because we know that 1,600 represents 1/7 of how much water was lost, we just have to multiply by 7, which gets 11,200.   after adding 11,200 to how much water was left at 7: 00 p.m. which was 6,800. 11,200 + 6,800 = 18,000

this means that the pool originally had 18,000 gallons in the pool.

you can also check your work by doing 18,000 - 4(1600), which becomes           1800 - 6400 which gets you 11,600.

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step-by-step explanation: