1) Find the formula for this: Product of the square of p and the cube of q. a) S= p3q2 b) S = p2q3 c) S = pq d) p2q3 e) pq 2) Find the formula for this: Average A of four numbers m, n, p and q. a) A = (m + n + p + q)/4 b) (m + n + p + q)/4 c) A = m + n + p + q 3) Find the formula for this: Time T, in minutes, for a train journey of a hours and b minutes a) T = 60a + 60b b) T = 3600a + 60b c) T = 60a + b d) T = a + 60b e) T = a + b 4) Attempt Question (i): Find a formula for the sum of S of any four consecutive odd numbers. [Hint: Let n be the smallest odd number.] a) S = 4n + 10 b) S = 3n + 10 c) S = 4n + 12 5) Attempt part (ii): Hence, find the value of S when the greatest odd number is -17.  a) 80 b) 121 c) -40 d) -80

Unit 5.4 Mathematical Formula

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