Simplify. (-3ab^3)^4

A. -12a^4b^7

B. -7ab^12

C. -81a^4b^7

D. 81a^4b^12

There is a picture too if you need it.​

Find the area of the triangle shown 3 by 6

How many liters of peroxide should be added to 12 liters of an 8% peroxide solution so that the resulting solution contains 16% peroxide?   original added new amount of peroxide 0.96 liters x 0.96 + x amount of solution 12 liters x 12 + x 0.18 liter 1.14 liters 1.92 liters 2.10 liters

Can someone me find the original price? the discount is 5% and the sale price is $68.40