Need step by step thank you

Step-by-step explanation:

( 8x² - 3x - 4) - ( 10x² - 2x + 8 )

= 8x² - 3x - 4 - 10x² + 2x - 8

= -2x² - x - 12

rectangle: 9 1/8 x 4 1/9 = 37 37/72in

parallelogram: b times h= 10.3 x 6.2 = 63.86

trapezoid: a+b/2 times h= 42.5

volume of prism: l times w times h= 36

answer:

c) the x-coordinate of the center of the circle increases by 3