)find the solution of y"+2y'=64sin(2t)+64cos(2t) with y(0)=9 and y'(0)=9

Can someone me my sister? she is in third grade. 50 points and brainlist! ones that are not answered. plz and thx!

The u-drive rent-a-truck company plans to spend $13 million on 320 new vehicles. each commercial van will cost $25 comma 000, each small truck $50 comma 000, and each large truck  $80 comma 000. past experience shows that they need twice as many vans as small trucks. how many of each type of vehicle can they buy?

Which expression and diagram represent “renee biked four times as far this month as last month”?