Answer:
Step-by-step explanation:
Start by taking everything out of the parentheses:

Note two negatives make a positive:

Combine like terms:

Simplify

Answer:
A = 20% B = 36%
Step-by-step explanation:
35 in total bought
2/10 = who bought model A = 20%
16+9 = 25 => 9/25 who bought model B = 36%
Remove parentheses by multiplying factors.use exponent rules to remove parentheses in terms with exponents.combine like terms by adding coefficients.combine the constants
Answer:
mmm
Step-by-step explanation: