Answer:
Question?
Is the wording: price of "a" dollars, (in italics)?
If so, the equation would be:
0.8a
Otherwise, if "x" represents the regular price, then the equation would be:
0.8x
Step-by-step explanation:
Only answer that can give u zero is zero
Equation simplified would be 5y+6xy
The explicit formula is D. -4n + 15.