Answer
2.665
Work Step by Step
$(0.3)^3(-5)-(-2.8)\longrightarrow$ Solve exponents.
=$0.027(-5)-(-2.8)\longrightarrow$ Solve multiplication.
=$-0.135-(-2.8)\longrightarrow$ Change subtraction of a negative to the additive inverse.
=$-0.135+2.8\longrightarrow$ Solve.
=2.665