1. (i) On Monday a shop receives $60.30 by selling bottles of water at 45 cents each.
How many bottles are sold? [1]
(ii) On Tuesday the shop receives x cents by selling bottles of water at 45 cents each.
In terms of x, how many bottles are sold? [1]
(iii) On Wednesday the shop receives (x – 75) cents by selling bottles of water at 48 cents each.
In terms of x, how many bottles are sold? [1]
(iv) The number of bottles sold on Tuesday was 7 more than the number of bottles sold on
Wednesday. Write down an equation in x and solve your equation. [4]
2.
The diagram shows a trapezium.
Two of its angles are 90o.
The lengths of the sides are given in terms of x.
The perimeter is 62 units.
(i) Write down a quadratic equation in x to show this information. Simplify your equation. [2]
(ii) Solve your quadratic equation. [2]
(iii) Write down the only possible value of x. [1]
(iv) Calculate the area of the trapezium. [2]
The diagram shows a right-angled triangle.
The lengths of the sides are given in terms of y.
(i) Show that 2y2 – 8y – 3 = 0. [3]
(ii) Solve the equation 2y2 – 8y – 3 = 0, giving your answers to 2 decimal places. [4]
(iii) Calculate the area of the triangle. [2]