Do all work in order, on your own paper. rut a box around your final answer, show all work. I+ 8 for each correct answer. Substitutions must have u = ], du = ,etc. 1) a ) 5 4 x3 4x dx 6) 5 4 x 3- 4x dx () * + 61x- 3 dx b ) 5 4 ( 2 x + 1 ] dx c ) Sex x dx 3 ) a) 5x+ tedx b ) ( x+ *- ax c ) 2 edx 4) a) Acceleration in alth = 12t- 7. The velocity vit) to 7 when t = 1. Find the velocity viti. b) Marginal cost is C ( x 1 = 2x + 5 and the overhead is $30. Find the Cost to make 4 items. 5 ) 2 ) "4 = 6x2 and when X= 1, y = 5. Find y (x) when x = 2. 6) dy = 2 2x and when x= 0, y= - 1. Find y (x ). dx 4 6) a ) Find 2 ( 21 + 1 ) i= 2 51 :2- nin+1) (2n+1) 6 6 Find 21212 +3i - 7. 1 = 1 ( OVER )