a. If the CO2 concentration level increased from 330 ppm in 1980 to 360 ppm in 1996, by what percentage did the CO2 concentration level increase over that time interval?

b. Given x = -4 Find y if y = 2sin(2x+3) (*be sure your calculator is in radian mode and round your answer to two decimal place accuracy)

c. If x = 22 find K if

K = 01.0158x² + 1.27x + 342 + 3.5sin (6.25x -0.5)

(*be sure your calculator is in radian mode and round your answer to two decimal place accuracy)

d, Given x = 10 find y if

y =.02x² + 2.4x +124

Please show work I need the practice - thanks