Origin and scale

(12)

26.George bought a car at $ 5000 and sold it at $ 5500. What benefit , in percent, did he make? (10%profit)

27.If 20% of N is equal to 40, what is N? (200)

28.The price of a T-shirt was $ 20. It was first increased by 20%. They did not sell well the shop owner decreased the price by 20%. What is the new price of the T-shirt? (20$)

29.What percent of 1 hour is 15 minutes? (25%)

30.Solve the following inequality? (???????)

31.Solve 2(n+5) = -2 (n=-6)

32.What are the roots of the polynomial (x+4)(x-7)=0? (7, -4)

33.Simplify 4x³ ∙ x ^{3 (///////////)}

34.A function which has a constant difference per interval is? (?????????)

35.Which of the following is not a method for solving systems of liner equations?

36.Solve -9x – 13 = - 103 (y=10)

37.Which of the following statements follows from the assumption that John has exactly three cars?