An electric company charges a $50 fee plus ten cents per kilowatt. What is the independent variable in this function?
the amount of kilowatts used
200
Independent is to Dependent as Domain is to _______.
Range
200
Find g(-3) for g(x)=4x-2.
-14
200
Solve for x: -5 - 15x = 10
x = -1
200
Solve or X: 5X + 6 = 26
X = 4
200
It costs ten dollars deposit plus two dollars an hour to rent an umbrella. What is the independent variable in this relationship?
the hours
300
Functions can have repeated X-values. (True or False)
False
300
Find f(-4) for f(x)=x^2 - 6.
10
300
Solve for x: 5(2x - 3) = 25
x = 4
300
Solve for X: 6(1 - 4x) = -18
X = 1
300
A T-shirt company charges Lyford High School one hundred dollars plus ten dollars per shirt. What is the dependent variable in this situation?
total cost
400
The Goal in solving equations is to _____________the variable.
Isolate
400
Find the corresponding dependents for the following set of independents {0,1,2,3} in the function f(x)=3x + 4
{4,7,10,13}
400
If the length of a rectangle is 2x + 1 and the width is x - 2, find the expression that represents the perimeter of the rectangle.
Perimeter = 6x - 2
400
The length of a rectangle is 5 meters greater than the width. The perimeter is 150 meters. Find the width and length.
length = 40 meters and width = 35 meters
400
Cinema 10 charges a base fee of two hundred dollars plus three dollars per student. What is the independent variable and what is the function if "s" represents the number of students and "t" represent the total cost?
the number of students is the independent variable and the function is
t = 200 + 3s
500
Name three ways to represent a function.
Table, Mapping, Graph, Ordered Pairs, Equation
500
Cell Phone company "A" charges $10 plus twenty-five cents per minute.
Cell Phone company "B" charges $8 plus thirty cents per minute. What function would you use for each company?
Company "A" f(x)=10+.25x
Company "B" f(x)=8+.30x
500
The length of a rectangle is 50 meters. This is 6 meters more than twice the width. Find the width.
width = 22 meters
500
The perimeter of a triangle is 76 cm. Side a of the triangle is twice as long as side b. Side c is 1 cm longer than side a. Find the length of each side.
a = 30cm, b = 15cm, c = 31cm
500
What is the range of the following function?
y = 2x + 5