Which of the following word problems can be solved using the equation 4(x + 8) = 407 A. Four friends share a box of cookies. After each friend receives x cookies, there are still 8 cookies left in the box. If there were initially 40 cookies in the box, how many cookies did each friend receive? B. A student has four bags of marbles. Each bag originally has x marbles. After taking out 8 marbles from each bag, there is a total of 40 marbles in the bags. How many marbles were originally in each bag? C. A square has a side length of x inches. Each side of the square will be increased by 8 inches to create a larger square. If the larger square has a perimeter of 40 inches, what is the side length, in inches, of the original square? D. Oscar has 8 stacks of trading cards. Each stack originally has x trading cards. He adds 4 cards to each stack giving him a total of 40 trading cards. How many trading cards did Oscar originally have? (4 Points)​

1. the manager of collins import autos believes the number of cars sold in a day (q) depends on two factors: (1) the number of hours the dealership is open (h) and (2) the number of salespersons working that day (s). after collecting data for two months (53 days), the manager estimates the following log-linear model: q 4 equation 1 a. explain, how to transform the log-linear model into linear form that can be estimated using multiple regression analysis. the computer output for the multiple regression analysis is shown below: q4 table b. how do you interpret coefficients b and c? if the dealership increases the number of salespersons by 20%, what will be the percentage increase in daily sales? c. test the overall model for statistical significance at the 5% significance level. d. what percent of the total variation in daily auto sales is explained by this equation? what could you suggest to increase this percentage? e. test the intercept for statistical significance at the 5% level of significance. if h and s both equal 0, are sales expected to be 0? explain why or why not? f. test the estimated coefficient b for statistical significance. if the dealership decreases its hours of operation by 10%, what is the expected impact on daily sales?