MULTIPLE CHOICE: Choose the correct answer and write the letter of your choice in your answer sheet. Which of the following is a linear inequality in two variables? \( \begin{array}{llll}\text { a. } 2 x \geq 10 & \text { b. } x-2 y \geq 3 x+4 & \text { c. } 5 x-2 y=4 & \text { d. } 3 y>y-7\end{array} \)

Lic a \( r \) ? Sendo \( f \) e \( g \) funçōes reais de variável real, defina \( f+g, f-g, f g \) e \( \frac{f}{g} \), sendo: 2.2 \( f(x)=3 x \) e \( g(x)=x+\frac{1}{2} \)

In designing the Strange Situation, Mary Ainsworth and her colleagues reasoned that securely attached infants and toddlers a. do not show distress when the parent leaves the room b. are just as easily comforted by an unfamiliar adult as by a parent c. combine anger and clinginess when reunited with a parent who has left the room for a time d. should use the parent as a secure base from which to explore an unfamiliar setting

1. \( y=x^{2}+1 \) en el punto \( P(2,5)= \) 2. \( y=x^{3}+1 \) en el punto \( P(-1,0) \) 3. \( y=-x^{2}+2 \) en el punto \( P(-1,1) \) 4. \( y=0.5 x^{2}-1 \) en el punto \( P(-2,1) \)

10. Какова максимальная высота полета мяча, брошенного вертикально вверх со скоростью \( 18 \mathrm{~m} / \mathrm{c} \) ? Ускорение свободного падения принять равным \( 10 \mathrm{~m} / \mathrm{c}^{2} \).

(t) \( 478 \% \)