To increase an amount by 7%, what multiplier would you use

Hey free points ! people i have a few math questions on my profile consider looking at them i have to get done in 30 mins!

Prism m and pyramid n have the same base area and the same height. cylinder p and prism q have the same height and the same base perimeter. cone z has the same base area as cylinder y, but its height is three times the height of cylinder y. the figures and have the same volume.

If x+y+z=0 what is the value of [tex] {x}^{3} + {y}^{3} + {z}^{3} [/tex]