Step-by-step explanation:
the volume of any cube or prism is
length × width × height (or depth)
11.1 = 2.8 × 1.2 × depth
depth = 11.1 / (2.8 × 1.2) = 11.1 / 3.36 = 3.303571429 ft
≈ 3.3 ft
15 multiplied by 11 is 165. so you're width is 11.
P-14.50=53.00
To find the original price, just add 14.50 to the 53.00 and thats it.
(3m²n⁴)³ = 27m^6n^12. choice C