Pasagot pls Yung may solution Po sana

Find the 2nd derivative. y=sin(2x³-9x)

Don bought 3/4 of a poundof jellybeans and 5/8 poundof gummy bears. how muchcandy did he buy? ​

On a bike trip across the united states rodney notes that he covers 190 miles every 4 days if he continues at this rate use a ratio table to determine about how many miles he could bike in 6 days