Petra booked a family holiday. The total cost of the holiday was £4000 plus VAT at 20%. Petra paid £800 of the total cost when she booked the holiday. She paid the rest of the total cost in 5 equal monthly payments.

Work out the amount of each monthly payment

y=3n + 1

step-by-step explanation:

this is wrong because it says the second number is one less and i added one instead

the height of the surface increases from the center out to the sides of the road.

step-by-step explanation:

as we move out we move away from the x-axis.

and as mentioned in the problem statement that height of a road increases when we move away from the center x.

hence proved that 3rd option

the height of the surface increases from the center out to the sides of the road.

is the correct option.