Let's first retrace her steps
using PEMDAS we know that we first have to do the operations in parenthesis then multiply before we add or subtract so we have
so far so good now lets check the other side
from this we can determine that all of her math is correct. However, to say that two expressions are equivalent you have to substitude the same number on both expressions and get the same answer. Since she did not do this, amd used x=1 on one expression and used x=-1 on th other her answer is incorrect.
<u>Given</u>:
Given that the list of students' scores on a quiz.
The list of students' scores are 5, 12 ,7, 15, 20, 14, 7
We need to determine the mode of these scores.
<u>Mode</u>:
The mode of the set of data is the number that occurs most often in the given set of numbers.
Thus, from the data, the number that occurs most often is 7.
The number 7 occurs twice in the given set of data which is the maximum number of occurrence by any other number in the given set of data.
Hence, Mode = 7
Therefore, the mode of these scores is 7.
Answer:
48 years
Step-by-step explanation:
See the photo. You can solve it 2 different ways, one being cross multiplication, and the other being simplifying.
A Yes as the x values are all different
B f(x) = 5x + 14
when x = 2 , f(x) = 5(2) + 14 = 24
x = 5, f(x) = 39,
Each value of f(x) is greater than corresponding ones in the function in A.
when x = 9 f(x) = 59 which is greater than for first function ( =12)
First function is a decreasing while f(x) is increasing
C f(x) = 64 = 5x + 14
5x = 64 - 14 = 50
x = 10
Answer:
483.046153846
Step-by-step explanation: