David wishes to provide his son with $18,000 on his 18th birthday. He invested $8,000 on his 5th birthday. On his son's 10th birthday he finds that he has earned 6.30% c.s.a. so far, but he estimates the rate will drop to 3.90% c.q. for the time remaining. Find the additional amount he must invest on his son's 10th birthday to achieve his objective.

Sammie invested $18,750 on Feb 25th 2021 earning 5.15% c.s.a. How many years after will his account contain $23,500 ?

Round your answer to two decimal place.

Sam invested $17,000 at 6.00% c.s.a for 24 months, 8.75% c.q. for next 3 years and 6.25% c.m. for the next 5 years. Find the compound amount

Brandy would like to have $25,950 in her account in 15 months. How much must she invest now if the interest rate is 5.30% c.q.?

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