exam Maths Puzzle Numerical Ability

Please help. What am I doing here?
In exercise 30, if f(x)= 4x-3, find the following:
f(-1)

Read Solution (Total 0)

exam Other Question

what is the lowest common mutltiple of 8,28,48 the areas of corresponding faces of two similar triangular prisms are 49 cm square and 25 cm square. What is the ratio of the corresponding side legnths? of the perimeters? of the