\left[\frac{5}{8}+3\right]+\left[\frac{10}{8}+3\right]+\left[\frac{15}{8}+3\right]+...+\left[\frac{40}{8}+3\right] 

writing summation series in sigma notation

_____ 1. Simplify . Express your answer using only positive exponents. 

a.  

b.  

c.  

 

d.  

 

_____ 2. Simplify . Express your answer using only positive exponents.  

 

_____ 3. Evaluate  

a.  

b.  

c.  

d.  

 

_____ 4. When simplified and written with positive exponents, the expression  simplifies to 

Question 4. [15 marks] For which domains X listed below the function y = (x): X [-1,1] is invertible? Justify your answer.

(a)  

(b)  

(c)  

Use PMT to determine the regular payment amount, rounded to the nearest cent. The cost of a home is financed with a $120,000$ 20-year fixed-rate mortgage at 3.5%.

a. Find the monthly payments and the total interest for the loan.

b. Prepare a loan amortization schedule for the first three months of the mortgage.

-------------------------

a. The monthly payment is $___.

(Do not round until the final answer. Then round to the nearest cent as needed.)