12. Bernardo gastou em uma loja \( \frac{3}{7} \) do seu dinheiro, ficando com 50 reais. Quantos reais Bernardo possula inicialmente? a) 80,00 b) 87,50 c) 90 d) 92,50 e) 95,00

Identify the greatest common factor of \( 45 x y z \) and \( 27 c x y \).

Determine whether the following equation defines \( y \) as a function of \( x \). \( x^{2}+y^{2}=16 \) Does the equation \( x^{2}+y^{2}=16 \) define \( y \) as a function of \( x \) ? Nos

Evaluate. \[ \frac{(-4-3)^{2}-10}{3-4^{2}} \]

Fill in the missing values to make the equations true. (a) \( \log _{5} 3+\log _{5} 4=\log _{5} \square \) (b) \( \log _{8} 11-\log _{8} \square=\log _{8} \frac{11}{5} \) (c) \( 2 \log _{8} 5=\log _{8} \square \)

The graph of which function is the same as the graph of \( y=\frac{1}{x} \) shifted to the right 5 units and shifted up 2 units? \[ y=\frac{1}{x-5}+2 \] \( y=\frac{1}{x+5}+2 \) \( y=\frac{1}{x+5}-2 \) \( y \)