Noah was assigned to make 64 cookies for the bake sale he made 125% of that number 90% of the cookies he made were sold. how many of noahs cookies were left after the bake sale

Find dy/dx using implicit differentiation ln(20+e^xy)=y

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?

Weekly wages at a certain factory are normally distributed with a mean of $400 and a standard deviation of $50. find the probability that a worker selected at random makes between $450 and $500