C= 400 – 5x + 0.125x2, where x is the number of gas grills produced. how many units should be produced each day to yield a minimum cost?

1. there are 25 students who started computer programming in elementary school and 25 students who started computer programming in middle school. the first group had a mean final project grade of 95% and the second group had a mean final project grade of 92%. the line plot shows the differences after 10 rerandomizations. determine whether the difference in the means of the two groups is significant based on the line plot. explain your answer.

Lee has $1.75 in dimes and nickels. the number of nickels is 11 more than the number of dimes. how many of each coin does he have?

Hi, can anyone show me how to do this problem? 100 points for this. in advance