a knife is 4 times the cost of the spoon
12 spoon and 16 knives equals £105.64
work the cost of one knife

and 2x^2 +12x-7=0 (completing the square )

An unknown number x is at most 10. which graph best represents all the values of x? number line graph with closed circle on 10 and shading to the right. number line graph with open circle on 10 and shading to the right. number line graph with open circle on 10 and shading to the left. number line graph with closed circle on 10 and shading to the left.