1.

Sam puts $1.25 into his piggy bank in January 2013. Each month he increases how much he puts in by 4 cents.

How much money will he put in his piggy bank in April 2016?

A)$157.25

B)$16.85

C)$3.35

D)$2.81 2.

Sarah's yearly salary is based on a geometric sequence. Her yearly salaries for her first three years are $34,000 , $35,020, and $36,070.60

What will be her yearly salary for her 7th year?

A)$41,140

B)$40,000

C)$40,597.78

D)$41,815.71

Guest Dec 14, 2017

#1**+1 **

1.

There are 39 months between January 2013 and April 2016.

39 x 0.04 cents =$1.56 - the increase in his saving by April 2016

$1.56 + $1.25 =$2.81 - Amount he must put in his piggy bank in April 2016.

2.

$34,000 x 1.03^6 =$40,597.78 - Sarah's expected salary by 7th year.

Or, you could use the nth term formula to find the same thing:

Nth. Term = F x R^(N - 1)

7th. term =$34,000 x 1.03^6 =$40,597.78 - Which is the same as above.

Guest Dec 14, 2017