Jade invested $13,500 at 5.2% interest, compounded semiannually, and she wants to know how much her investment will be worth in 8 years
part 1:  what is the periodic interest rate of jade investmentpart 2: how many compounding periods does jades investment offer in a year? how about in 8 years? 

5.2% interest, compounded semiannually means 
2.6% each 6 months because semi-annual is twice per year. 
1 @ time zero = 1.026 at 6 months and (1.026)² in a year = 1.052676 or 5.2676% APR 
8 years is 16 periods (1.026)^16 
13500 time zero
13851 6m 1period 1/2 year
14211.1312m2periods 1 year 
14580.62 18m3periods
14959.71 24m4p2y 
15348.6630m5p
15747.73 36m6p3y 
16157.17 42m7p
16577.26 48m8p4y 
17008.27 54m9p
17450.48 60m 10p5y 
17904.19 66m11p
18369.70 72m12p6y 
18847.31 78m13p
19337.34 84m14p7y 
19840.11 90m 15p
$20355.96 96m16p8yrs = $13,500 * (1.026)^16 

From this set of information, you should be able to answer the three parts. 
There are math formulas available in books about it. 

Using the APR, you can get the same answer 
(1.052676)^8

3units/ 5 feet = 60 units/ 100 feet3 units/ 5 feet = 18 units/ 30 feetthe dimensions of the scale drawing are 60 units by 18 units.hope this !