Algebraic Expressions

Amanda is x years old. Safa is twice her age. Safa's brother is 2 years younger than her and her sister's age is 5 years more than her brother's. What is the correct expression for Safa's sister's age?

• 2(x -1) + 5

• 2 ( x-2 ) + 5

• x+2 + 5

• 2x - 3

If sides of a rectangle are ( X+ 5 ) and ( X+ 7) work out the are and perimeter of the rectangle in terms of x.

An equilateral traingle has one side of 2+x ( 3y + 2 ) m if y = 6, and x = 5, work out the perimeter of equilateral triangle.

Sara has x bubble gums with her, she gives 4/5 of the bubble gums to Mira and 1/2 of remaining to Ahmed. How much does she have with her?

• none of these

Which is the correct equation for the graph shown?