Intro to Functions
Determine whether or not the following relation is a function:
Input: Output:
1 7
5 4
0 3
9
Yes;
Every input corresponds to one output.
Inputs can share an output.
Write an inequality that represents the following verbal phrase:
n less than 8
n < 8
FREEBIE!
Nice
The more you take, the more you leave behind. What am I?
Footsteps
Given the function, f(x) = -3x + 7,
find f(-5)
(-5) x (-3) + 7
15 + 7 = 22
Write an inequality that represents the following verbal phrase:
G greater than or equal to 120
G ≥ 120
Solve for the value of x:
3x + 10 = 70
x = 20
What can travel around the world while staying in the same spot?
a stamp
FREEBIE!!!
NICEEEE
Translate the following word problem into a linear inequality:
Alexis is saving to buy a laptop that costs $1,100. She has saved $400. She makes $12 per hour babysitting. How many hours does she need to work in order to at least reach her goal?
400 +12h ≥ 1,100
Create an equation to represent the following scenario.
Ethan has $1900 in the bank. She wishes to increase her account to a total of $2500 by depositing $30 per week from her paycheck. Write an equation to find how many weeks she needs to reach her goal.
1900 + 30x = 2500
What has to be broken before you can use it?
An egg
If f(x) = 7x - 5; f(6)
7(6) - 5
42- 5 =
f(6) = 37
FREEBIE!!!
Nice job
CREATE AN EQUATION TO REPRESENT THE FOLLOWING:
2,000,000 gallons of ice cream are produced in the US each day. You want to know how many days it will take to produce 40,000,000 gallons of ice crean.
2,000,000d= 40,000,000
You answer me, although I never ask you questions. What am I?
A telephone
If h(x) = x2 + 2x, then find h(3)
h(3) = 32 + 2(3)
= 9 + 6
h(3) = 15
Admission to a carnival is $8.00. You allow $5.00 for lunch and $3.00 for a snack. Each ride is $2.50. You have $40.00 to spend. How many rides can you go on?
40 = 16 + 2.50x
You can go on 9 rides.
FREEBIE!!
NICEEE
I’m not alive, but I can grow; I don’t have lungs, but I need air; I don’t have a mouth, but water kills me. What am I?
A fire