Work out the surface area of the solid cuboid. 2.5m 2m 5m The diagram is not drawn to scale. 7 8 9 9 W е r u y

Which shows the correct substitution of the values a, b and c from the equation 1=-2x+3x^2+1

Ithink i know it but i want to be sure so can you me out ?

Define the type of sequence below. 7, 14, 28, 56, 112, a. neither arithmetic nor geometric b. arithmetic c. both arithmetic and geometric d. geometric