Answer: 9 elm trees were removed.
Step-by-step explanation:
Let x represent the number of elm trees removed.
The total number of elm trees in the park is 22. Elm leaf beetles have been attacking the trees. After removing several of the diseased trees, there are 13 healthy elm trees left. The equation to find the number of elm trees that were removed would be
x + 13 = 22
Subtracting 13 from the left hand side and the right hand side of the equation, it becomes
x + 13 - 13 = 22 - 13
x = 9
Answer:
3.44
Step-by-step explanation:
(-6.8 - c) / 1.2 = -2.8
(multiply both sides by 1.2)
-6.8 - c = -3.36
(add 6.8 to both sides)
-c = 3.44
c = 3.44
Answer:
Depending on how the input of each function defined,
- The first choice
, - The third choice

- The fourth choice

might be functions.
Step-by-step explanation:
A function between two sets (domain and range) should
- be defined for all elements in the domain, and
- map each element from the domain to exactly one element in the range.
The second choice can't be a function since the element
from the domain is mapped to more than one element in the range.
Keep in mind that a function should be defined for all elements in its domain. For the first relation to be a function, its domain needs to be
. Similarly, the domain for the third and fourth relations should be
and 
Even function is symmetrical about the y axis
not sure what it means if the polynomial is positive
the zeroes are how many times it hits the x axis
it hits 4 times so 4 zeros
Answer: (8, 45)?
Step-by-step explanation: