14. [44.54 Points] DETAILS LARPCALC11 7.2.044.MI. MY NOTES ASK YOUR TEACHER PRACTICE ANOTHER Two planes start from Los Angeles International Airport and fly in opposite directions. The second plane starts i hour after the 2 first plane, but its speed is 60 kilometers per hour faster. Find the speed of each plane when 2 hours after the first plane departs the planes are 2960 kilometers apart. The first plane that leaves the airport travels at kilometers per hour. The second plane that leaves the airport travels at I kilometers per hour. ' fI fI Need Help? Submit Answer 15. [44.54 Points] DETAILS LARPCALC11 7.2.045. MY NOTES ASK YOUR TEACHER PRACTICE ANOTHER Two cheeseburgers and one small order of fries contain a total of 1250 calories. Three cheeseburgers and two small orders of fries contain a total of 1990 calories. Find the caloric content (in calories) of each item. cheeseburger l calories fries l calories Need Help? Submit Answer 16. [14.54 Points] DETAILS LARPCALC11 7.2.049.MI. MY NOTES ASK YOUR TEACHER PRACTICE ANOTHER A total of $22,000 is invested in two corporate bonds that pay 3.5% and 5% simple interest. The investor wants an annual interest income of $830 from the investments. What amount should be invested in the 3.5% bond? is i Need Help? Submit Answer 17. [14.54 Points] DETAILS LARPCALC11 7.2.055. MY NOTES ASK YOUR TEACHER PRACTICE ANOTHER Ari agricultural scientist used four test plots to determine the relationship between wheat yield y (in bushels per acre) and the amount of fertilizer x (in hundreds of pounds per acre). The table shows the results. 1.0 33 (a) Find the least squares regression line y = ax + b for the data by solving the system for a and b. 4b + 7.05 = 177 7b + 13.56 = 328.5 (in) Use the linear model from part (a) to estimate the yield for a fertilizer application of 178 pounds per acre. C] bushels per acre Need Help? _ Submit