Here are offers from two different shops. shop 1 apple juice £1.80 for a litre. shop 2 apple juice £2.20 for two pints. which shop is the best value for apple juice

Shop 1

Step-by-step explanation:

1 litre = 2,113 pint

The first shop's offer is £1.80 for 1 litre which is the same as £1.80 for 2,113 pints. The second shop's offer is £2.20 for 2 pints.

When buying in shop 1 you get more juice for cheaper price, so this shop has the best value for apple juice.

3. parallelogram

step-by-step explanation:

we turn each of our sides into direction vectors

ab=b-a=(3 - 7, 1 - 0) = (-4, 1)

bc=c-b=(1,6)

cd=d-c=(4,-1)

da=a-d=(-1,-6)

we see how the opposite sides have negated direction vectors; this is characteristic of a parallelogram.   we have congruent sides ab=cd and bc=da with unequal lengths because 1^2+6^2 is different from (-4)^2+1^2.   so it's not a square or a rhombus.  

we check the dot product of direction vectors of adjacent sides.   we have

ab dot bc = -4(1) + 1(6) = 2

that's not zero so the sides are not perpendicular.   we've ruled out rectangle.

the direction vectors indicate two pairs of congruent parallel sides, so we choose parallelogram over trapezoid.

12*c

step-by-step explanation: