LT REVIEWER FOR GEN MATH

Which of the following is not a function?

• The rule that assigns the name of the school to each student.

• The rule that assigns to each person his/her surname.

• The rule that assigns to each person his/her mobile number

• The rule that assigns to each child his/her mother.

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

• 𝑆(ℎ) = 300 + 25ℎ

• .𝑆(ℎ) = 300 − 25ℎ

• 𝑆(ℎ) = 300(25ℎ)

Given the relation 𝐴 = {(8,1), (6,9), (n,10), (9, 8)}.

Which of the following values for n will make relation a function?

• 9

• 2

• 6

• 9

At a skateboarding rink, a skateboarder pays an initial amount of Php 25 for the entrance fee plus Php 10 for every hour of use. If a skater spends 6 hours in the rink, the amount spent would be ____.

• 85

• 25

• 60

• 150

Jenny's wage for a tutoring job is two hundred fifty pesos per hour. Let t represent the number of working hours, and f(t) represent the total amount earned. Write the function that shows the relationship.

• f(t) = 250 + t

• f(t) = 250t + 250

• f(t) = 250t - 250

• f(t) = 250t

If 𝑓(𝑥) = −2𝑥² − 3, find 𝑓(0).

If 𝑔(𝑥) = −8𝑥 + 1, find 𝑔(−2).

Given 𝑞(𝑥) = |𝑥² − 9|. Find 𝑞(-6)

If ℎ(𝑥) = 𝑥² + 5𝑥 – 10, find ℎ(−1).

If f(x) = x - 2 , find f(x+1).