Answer:
Exploratory
Explanation:
Sheena, marketing manager for Yaard-Vark Lawn Tractors, is interested in the relationship between the prices of lawn tractors and the level of sales. To test whether increasing prices will lead to a change in sales and, if so, how much of a change, she should use exploratory research.
Exploratory research is the kind of research where an unknown phenomenon is worked upon. In this case, Sheena does not know the effects of prices on sales. Therefore she carries out exploratory research to fill in the blanks.
Answer:
Balance after 30 years = $151,018.50
Explanation:
In order to calculate this, we will calculate the future value on an amount invested, gaining interest over the years of investment, and this is given by:

where:
FV = future value
PV = present value
r = interest rate
t = time in years.
Hence the future value is calculated as follows:
1. For the first 10 years at 7% interest:
7% interest = 7/100 = 0.07


2. For the last 20 years at 9.5%(0.095) interest:
Note that for the remaining 20 years, the present value (PV) used = 24,589.392, as ending balance after the first 10 years


Total Future value earned = $151,018.50
Answer:
$1,500
Explanation:
Given the compounding formula 
And given an investment (P), made at 16% compounded annually (r), and an ending amount of $1,740 (A) at the end of the year (n = 1 year), the original amount invested (P) can be computed as follows.


= P = 1,740/1.16 = 1,500.
Therefore, the original investment was $1,500.