PS 4 ni Ahs S. Mepps

Which of the following tables represent a function?

Which of the following would be an appropriate null hypothesis?

Judy is earning ₱300.00 per day for cleaning the house of Mrs. Perez and additional ₱25.00 for an additional hour of taking care Mrs. Perez's child. Express the total salary (S) of Judy including the time (h) spent for taking care the child.

What graphical model is appropriate for decision-making?

For what values of $$x$$ can we not evaluate the function $$f\left(x\right)=\frac{3x+7}{x^2-4}$$ ?

A farmer believes that using organic fertilizer on his plants will yield a greater income. His income increased by 20% from last year. State the alternative hypothesis in symbols.

If $$j\left(x\right)=\sqrt{x+6}$$ and $$k\left(x\right)=9-x$$ , find $$j\left(k\left(-1\right)\right)$$ .

If $$A=\left\{2,4,6,8,12,14,16\right\}$$ and $$B=\left\{3,6,9,12,15\right\}$$ , find $$n\left(A\cup B\right)$$ .

From a survey of habits, 52% of students interviewed said that they surf the internet, 28% read pocketbooks, and 15% surf the internet and read pocketbooks. If a student is chosen from those who were interviewed, find the probability that this student