PLEASE SHOW SOLVING STEPS Jhon's total marks in exam-1 is x. His total marks in exam-2 increased by 20%. . Jhon’s total marks is decreased by 20% in exam-3.

i) Write an algebraic expression for his total marks in exam -2

ii)Write an algebraic expression for his total marks in exam -3

iii)Write an algebraic expression for the difference of Jhon's total marks in Exam-2 and Exam-3

iv) If the actual difference of Jhon's total marks in exam-2 and 3 is 84., find the value of x( Rahim’s

total marks in Exam-1)

V) Is it correct to say that his total marks in exam-3 is x? Justify using value of x

Paula makes stained-glass windows and sells them to boutique stores. if her costs total $12,000 per year plus $4 per window for the frame. how many windows must she produce to earn a profit of at least $48,000 in one year if she sells the windows for $28 each? 1. define a variable for the situation. 2. write an inequality that represents her profit. note: revenue is money coming in. cost is money going out. profit is the difference between the revenue and the cost. in other words: revenue - costs profit 3.using words, describe how many windows she must sell to have a profit of at least $48,000.