a box is a cuboid with dimensions 28cm by 15cm by 20cm to the nearest centimetre
disc cases are cuboids which measure 1.5cm by 14.2cm by 19.3cm all measured to nearest millimetre
show that 17 disc cases will definitely fit in the box

Given the graph below state whether or not the relation is a function, and give the domain and range.

The number of revolutions of two pulleys is inversely proportional to their diameters. if a 24-inch diameter pulley making 400 revolutions per minute is belted to an 8-inch diameter pulley, find the number of revolutions per minute of the smaller pulley.

The area of a rectangle is 15+5y square feet. which of the following expressions could be the length of the sides of the rectangle, in feet a. 5 and 3y b. 5 and 3+y c. 5 and 5+y d. 3 and 5+3y