Sasha thinks of a number. She adds 1 to her number then multiplies the result by 5.
a Use a mapping to write this as a function.
The answer Sasha gets is 11.
b Uşe inverse functions to work out the number Sasha thought of in the beginning.
Show all your working.

Which shows the pre image of triangle xyz

Identify the number as a rational or irrational.explai. 291.87

Emily works as a painter. for each job, it takesher 30 minutes to prepare an interior wall ofa house before she paints and 2 minutes persquare yard to paint that will. the graph belowshows the total time it would take her to do a job,based on the total area of the wallhow long does it take her to do a job when she paints a wall with an area of 15 square yards?