Simplify the expression by distributing and combining like terms.

Step-by-step explanation:
Distribute first: 0.3(-4x+20), multiply 0.3 by -4x and 0.3 by 20, to get -1.2x+6. Then, add -1.2x and 8.8x, which gives you 7.6x.
The final answer is 7.6x-7.