Nina purchased 4 pounds of strawberries for a total of $6.40.How much did she pay for one pound of strawberries?

If you answer 2+2 you will get over 80 points

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

Which equation represents a direct linear variationa. y=x2b. y=2/5xc. y=1/xd. y=x+3