16. This scale balanced with 3 green blocks on one side and 1 blue x-block on the other side. Find
the number to multiply by that makes the scale
balance. Then complete the equation to make
it true.
15 =

Solve for x by completing the square. 2x^2-4x+7=0

When you arrive at the lake, your friend realises he hasn’t got any swimming trunks. you need to ride to a sports shop. the sports shop is 8350 metres away. how many metres is it to cycle there and back?

Apark is in the shape of a rectangle. the park authorities are planning to build a 2-meter-wide jogging path in the park (shown as the shaded region in the image). what is the area of the jogging path? plz