book Maths Puzzle Numerical Ability

for quadratic functions, sketch two parabolas showing all procedure (concavity, y-intercept, x-intercepts, symmetric axis and vertex point)
A. y=2x^2-3x+1

B. y- -3x^2+2x+1

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book Other Question

Evaluate the expression: 3.2^-3/5.

I have come up with two different answers when I went my an checked my work.

Thanks so much for anyones help 1.find the volume of a rectangular solid 15.7 cm by 2 cm by 3cm

2. find the volume of a cylinder whose base has a diameter of 14ft & whose height is 23 ft

3. volume of a square pyramid whose side is 12 cm & whose height is 12cm