Toilet rolls come in packs of 4 and 9. The 4-pack is priced at £2.25.
The 9-pack is priced at £4.50.
By calculating the price per roll, determine which pack is better value.
Show your working.

hello from mrbilldoesmath!

answer:

the domain is the set { -2, 0, 2, 3}

discussion:

the domain is the set of x values in the ordered pairs (x,y). taking the x, or first component, of each ordered pair gives   -2, 0, 2, 3.

you,

mrb

if im not mistaking its

step-by-step explanation:  

it is g.

step-by-step explanation:

ad does increase as the sales increases so g. is right.

j. it really kick itself off because it says " always " .

h. nothing remains that same, everything changed through out the graph!

f. it would be right if it says " ad decrease = sales decrease" so right off the bat, that's wrong.