Sal and her three friends plan to bowl one or two games each. each game costs $2.50 each. identify the independent and dependent quantities in the solution. find reasonable domain and range value.
a. number of games; total cost; 4 to 8 games; $10 to $20
b. total cost; number of games; 4 to 8 games; $10 to $20
c. total cost; number of games; $10 to $20; 4 to 8 games
d. number of games; total cost; $10 to $20; 4 to 8 games

The correct option is A.

Step-by-step explanation:

It is given that Sal and her three friends plan to bowl one or two games each. Each game costs $2.50 each.

Let x represents the number of games and y represents the total cost.

Here, x is independent variable and y is dependent variable. It means

Number of games = Independent quantity

Total cost = Dependent quantity

Number of persons = 4

Each person can bowl one or two games. So, reasonable domain of the function is 4 ≤ x ≤ 8.

Domain = 4 to 8 games

The value of y at x=4 is,

The value of y at x=8 is,

So, the reasonable range is $10 ≤ y ≤ $20.

Range = $10 to %20

Therefore the correct option is A.

since your problem is x^4 = 81, what you have to undeo is the "to the fourth power" part.

the inverse (opposite operation) of "to the fourth power" is "to the fourth root".

  (x^4) ^ ¼   = 81 ^ ¼  

  81 = 3^4     so (3 ^ 4) ^ ¼   =   3 ^ 1   = 3

by hand: (3 ^ 4) ^ ¼   =   3 ^ (4 x ¼) = 3 ^ 1   = 3   (when you take a power to a power, multiply the exponents.)

or, do it by calculator. one way of finding the fourth root is to use ^ (1/4)

step-by-step explanation: