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b) A catalysis, increased temperature, increased concentrationb

H₂SO₄ + 2NaOH --> 2H₂O + Na₂SO₄
2HCl + Mg(OH)₂ --> 2H₂O + MgCl₂

Divide the cost of the event by the cost of the tickets to find how many tickets are required to break even 200/12 = 16.67

17 tickets would need to be sold to make any profit. 

a) 6x+8=2x, 8=-4x, x=-2

b) q² + 7q -3q - 21, q² + 4q - 21

The structure of all the American 15 marks are the same, three to four main points, with at least one example per point. Unlike the the 45 markers, you don’t have to create a debate, rather just explain t...