Functions
Determine if the relation is a function.
{(1,4),(2,5),(3,6)}
yes.
A die is rolled.
What is the probability of rolling a 4?
1 / 6
Simplify
34
81
How many terms are in:
5x2−3x+7
3
Simplify
12:18
2:3
Find the domain.
{(−2,4),(5,7),(8,1),(0,−3)}
{−2,0,5,8}
A bag contains 5 red, 3 blue, and 2 green marbles.
What is the probability of selecting a blue marble?
3 / 10
Simplify
x4 ⋅ x7
x11
What is the degree?
8x5 + 9
5
If 5 notebooks cost $15, how much does one notebook cost?
$3
Find the domain of
f(x) = 5 / (x−3)
All real numbers except x=3
A coin is flipped twice.
What is the probability of getting exactly one head?
1 / 2
Simplify
12x5y3 / 4x2y
3x3y2
Multiply
2x(x2+5)
2x3 + 10x
A map uses the scale
1 inch = 8 miles.
How many miles does 5 inches represent?
40 miles.
g(x) = 3x−7
Find g(−2)
-13
A spinner has 8 equal sections numbered 1–8.
What is the probability of spinning an even number?
1 / 2
Simplify
x−3y2 / z-4
y2z4 / x3
Multiply
(3x2) (4x5 - 2x + 1)
12x7 - 6x3 +3x2
A recipe uses flour and sugar in the ratio 3:5.
If there are 30 cups of sugar, how many cups of flour are needed?
18 cups
A relation has 7 ordered pairs and only 5 different x-values.
Can it be a function? Explain.
Only if none of the repeated x-values have different y-values.
A bag contains 4 red, 5 blue, and 3 green marbles.
Without replacement, what is the probability of drawing two red marbles?
4 / 12 × 3 / 11 = 1 / 11
Simplify
(2x-2y3)2 / 4xy-1
y7 / x5
Simplify
(2x2 − 3x + 4) + (5x2+x−7)
7x2−2x−3
4 / 7 = x / 35
x = 20