Barbara buys 3 boxes of eggs costing £1.20 each 1 jar of mayonnaise costing £1.80 2 loaves of breadshe pays £10 note and gets £1.60 change barbara works out the cost of 1 loaf of bread as £1.40

The cost of a box of eggs = $1.20

So, the cost of 3 boxes of eggs =

The cost of each jar of mayonnaise = $1.80

Let the cost of each loaf of bread = $'x'

So, the cost of 2 loaves of bread = = $2x

Since, Barbara gives $10 note and receives a change of $1.60.

Therefore, she pays for the given items.

Therefore,

So, x = 1.5

Therefore, the cost of each loaf of bread is $1.50 not $1.40.

option c) graph of line going through 1, 4 and 3, 10

step-by-step explanation:

let y equal to margo's coin collection

let x equal to number of years

at the begining x=0, y=1 → point=(x,y)→point=(0,1)

she adds 3 coins per year, then y=1+3x

at x=1, y=1+3(1)=1+3→y=4→point=(x,y)→point=(1,4)

at x=3, y=1+3(3)=1+9→y=10→point=(x,y)→point=(3,10)

the graph of line going through (1, 4) and (3, 10), then the option c is the correct.