QUESTION 1 Which of the following equations are linear? ( you can choose more than one). O y =6x + 8 Oy+ 7 = 3x Dy-x = 8x2 O 4y = 8 QUESTION 2 Emma's Extreme Sports hires hang-gliding instructors and pays them a fee of $50 per class as well as $20 per student in the class. The total cost Emma pays depends on the number of students in a class. Find the equation that expresses the total cost in terms of the number of students in a class. Solution: X