1. a) Is it true that 3(x +4) -5x = 0 is a linear equation. Explain your answer, and if it is linear, find theleading term and the degree (See Section R.4 Objective 1)

b) Solve the equation3(x +4) -5x = 0

c) Solve the equation. Explain why it is a polynomial equation: find the degree

2. Is it true that

a) a rational expression always has a variable in the denominator. Give an example of a rational expression.

b) the expressionis a rational expression. Explain your answer

c) the expressionis a polynomial. Explain your answer

d) we have the restriction on any fraction: division by zero is forbitten (identified). Explain if not

e) wemust checka rational equation because we have the restriction: denominator must be not equal to zero. Explain if not

d) Solve the equation.Explain why it is a rational equation

3. a) Is it true to solve a literal equation you should isolate the indicated variable first, and then solvethe equation for this variable

b) Solve the literal equation for the Indicated variable

2a =c -2b for c(see Section 1.1 Examples 8, 9)