4 Figure A and figure B are both regular polygons. The sum of the perimeter of figure A and the perimeter of figure B is 63 inches. The equation \( 3 x+6 y=63 \) represents this situation, where \( x \) is the number of sides of figure A and \( y \) is the number of sides of figure B. Which statement is the best interpretation of 6 in this context? (A) Each side of figure B has a length of 6 inches. B The number of sides of figure \( B \) is 6 . (C) Each side of figure A has a length of 6 inches. (D) The number of sides of figure A is 6 .

\( \left. \begin{array} { l } { c ^ { 2 } - a b = 22 } \\ { b ^ { 2 } - a c = - 103 } \\ { a ^ { 2 } - b c = ? } \end{array} \right. \)

sum of partial fractions. c. \( \frac{x^{2}-3}{x^{3}+x^{2}+x+1} \)

\( 4 x^{2}+k x+5=0 \) has roots whose difference is \( \frac{1}{4} \)

4. Na natureza há bactérias que se multiplicam tão rapidamente que dobram de volume a cada minuto. Partindo-se de uma bactérias, sendo \( V(t) \) o volume de uma bactéria analisada após \( t \) minutos, e sendo \( V(t)=V_{0} \times 2^{t} \) a relação que fornece o volume da bactéria no instante t , onde \( V_{0} \) é o volume inicial da bactéria. Determine após quanto tempo, uma bactéria de volume inicial igual a \( 2 \mu \mathrm{~g} \) chega a \( 2048 \mu \mathrm{~g} \).

3. Uis tiene el triple de dinero de maria menos \( \$ 1,0000 \) si entre ambos tienen \( \$ 110,000 \) ¿Cuanto dinero tiene en tatal maria?