I would like to check my answers plz help?
Question:
Problem 2: simplify x^2-1/x+2 * x^2+5x+6/x^2+4x+3
problem 3: solve 2x-3y=-5, -3+y=4
problem 4: the graph of the inverse of a function refleacts about a) x- axis b) y - axis c) line y=x d) line y=-x
problem 5: The value of a stock is given by V(t)=$45(1-e^-0.8t)+$15, where V is the value of the stock after time t, in months. Estimate the value of the stock after 6 months.
problem 6: An investment of $2560 is made at interest rate i, compounded annually. In two years, it grows to $ 3240. what is the interest rate? (note A=P(1+i)^t, A=amount in account after interest has accumulated, P=principal, i=interest rate, t= time in years.
problem 7: The inverse of a function is a) sometimes a function b) always a function c) never a functions d) never a relation.
problem 8: expand (x+2)^3
problem 9: solve l 3-4x l > 2
Answer:
6x^2-7x-3=0
6x^2+2x-9x-3=0
2x(3x+1)-3(3x+1)=0
(3x+1)(2x-3)=0
x= -1/3 and 3/2
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