2x + y= 4 find the value of y using substitution method​

In the 1970s, kmart used blue light specials to encourage customers to flock to a particular department having a temporary sale. a spinning blue light activated for approximately 30 seconds, and then an in-store announcement informed shoppers of the special savings in the specific department. over time, loyal kmart shoppers learned to flock to the department with the spinning blue light before any announcement of special savings occurred. if kmart was employing classical conditioning techniques, what role did the spinning blue light play?

Afirm’s production function is represented by q(m,r) = 4m 3/4r1/3, where q denotes output, m raw materials, and r robots. the firm is currently using 6 units of raw materials and 12 robots. according to the mrts, in order to maintain its output level the firm would need to give up 2 robots if it adds 9 units of raw materials. (a) true (b) false

Beranek corp has $720,000 of assets, and it uses no debt--it is financed only with common equity. the new cfo wants to employ enough debt to raise the debt/assets ratio to 40%, using the proceeds from borrowing to buy back common stock at its book value. how much must the firm borrow to achieve the target debt ratio? a. $273,600b. $288,000c. $302,400d. $317,520e. $333,396