Simplify the expression: 4a + 3b 2a + 6b

(a)  

Expand and simplify: 5(x - 2) + 3(x + 4)

(a)  

Solve for y: 2y - 7 = 3y + 5

(a)  

Find the area of a rectangle with a length of 12 cm and a width of 8 cm.

(a)  

Find the perimeter of a square with side length 10 cm.

(a)  

A circle has a radius of 7 cm. Find its circumference. (Use pi = 3.14)

(a)  

The angles in a triangle add up to 180°. If two angles are 45° and 60°, what is the third angle?

(a)