i can't seem to figure this out, can someone show me step by step on how to get the answer. PLEASE! thank you

1.)Write the equation of the tangent line to the graph ofy= (9x²6x+2)(1 + 2x)atx= 1.Check the reasonableness of your answer by graphing both the function and the tangent line.

2.)Write the equation of the tangent line to the graph ofy= 3x^4-2x-1/5-x^2. at x=1.Check the reasonableness of your answer by graphing both the function and the tangent line.

3.)

Suppose the revenue (in dollars) from the sale ofxunits of a product is given by the equation shown below.

R(X)= 56X^2 +68X/2X+2

Find the marginal revenue when33units are sold. (Round your answer to the nearest dollar.)

$________

4.)A travel agency will plan a group tour for groups of size30or larger. If the group contains exactly 30 people, the cost is$380per person. If each person's cost is reduced by $10 for each additional person above the 30, then the revenue is given by the equation shown below, wherexis the number of additional people above 30.

R(x) = (30 +x)(38010x)

Find the marginal revenue if the group contains35people.

$______