Hi i was wondering what is (-3ab^4)^4

( - 3 ) ^ 4 * a ^ 4 * ( b ^ 4 ) ^ 4 = 81 * a^4 * b^16 = 81a^4b^16.

Formulas for marine are 28 gallons per teaspoon.  30gal (28t/1gal) the gallons cancel leaving teaspoons = 840 teaspoons there are 8floz = 1cup 1floz = 2 tablespoons 3t = 1 tablespoons it's 31.11111111111111. so if you round to the nearest cup it would be 31. idk if this but i'm sure it will.