This is pretty much saying that if x = -3, then solve for the equation, so (-3)^2 - 4(-3) = 9 - 12 = -3
The number of ways to choose r objects out of n objects is:
C(n,r) = (n!)/(r! * (n-r)!)
The number of ways to choose 2 numbers out of a list of 9 numbers is:
C(9,2) = 9! / (2! * 7!)
= 9*8 / 2!
= 9*8/2
= 36
Here are all the possible combinations:
98 97
98 91
98 93
98 99
98 96
98 94
98 92
98 95
97 91
97 93
97 99
97 96
97 94
97 92
97 95
91 93
91 99
91 96
91 94
91 92
91 95
93 99
93 96
93 94
93 92
93 95
99 96
99 94
99 92
99 95
96 94
96 92
96 95
94 92
94 95
92 95
Answer:
25 rides
Step-by-step explanation:
has $28.50
15.75 + 0.50r 
28.50
Subtract 15.75
0.50r 12.75
r 25.5
you can't have half rides, so 25 rides
Answer:
QUESTION 1: (-3,0), (1,1), (5, 2), (9,3)
QUESTION 2: Draw a mapping diagram (see question 3)
QUESTION 3: Yes, the image below is a function.
Step-by-step explanation:
For question 1, you can pair the domains (x-values) with any y-value. The y-values can repeat.
For question 3b, you must understand that domains cannot repeat, but ranges (y-values can). In 3b, every x-value has a unique y-value which means that it is a function. You can also determine is something is a function by seeing if its graph passes the vertical line test.
