Scientists estimate thaf a whale might eat 6.3 x10^4 pounds of plankton in a week. Write this in stantard notation. HELP ASAP PLEASE

Problem melissa is her dad build a walkway in their backyard. the walkway will be 54 feet long and 1.5 feet wide. the local hardware store sells tiles which are 1.5 by 1.5 feet and come in boxes of 12. how many boxes of tiles do they need?

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

If x-1 and x+3 are the factors of x3+10x2+ax+b find a and b