f: x x3 3x2 x + 3 in the domain, -2 x 4. – – Find the values when f(x) = 0 Find the value when x = 2.5 f: x x3 5x + 2 in the domain, -3 x 3. – Find the values when f(x) = 0 Find the value when x = 2.5 Real Life Examples x is two older than y. z is 5 years younger than x. The sum of their ages is 113. Find all three ages. There are 100 seats in a cinema. Some are luxury seats, costing each; the €2 rest are ordinary seats costing When the cinema is full, the takings come to €1. a total of How many seats are luxury? €170.
f: x x3 – 3x2 – x + 3 in the domain, -2 x 4. Find the values when f(x) = 0 Find the value when x = 2.5 f: x x3 – 5x + 2 in the domain, -3 x 3. Find the values when f(x) = 0 Find the value when x = 2.5 Real Life Examples x is two older than y. z is 5 years younger than x. The sum of their ages is 113. Find all three ages. There are 100 seats in a cinema. Some are luxury seats, costing €2 each; the rest are ordinary seats costing €1. When the cinema is full, the takings come to a total of €170. How many seats are luxury?