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 )

The green family is a family of six people. they have used 4,885.78 gallons of water so far this month. they cannot exceed 9,750.05 gallons per month during drought season. write an inequality to show how much water just one member of the family can use for the remainder of the month, assuming each family member uses the same amount of water every month.

Rectangle pqrs has length a and width 4b. the x-axis bisects ps and qr what are the coordinates of the vertices

Lisa has three classes that each last 50 minutes. what is the total number of minutes of the three classes