y=5×+630 that's question 1
the other question im not sure
Answer:
No becasue she only has 22 yard and the total she needs is more than 23 yards
Using the function concept, it is found that this sequence is a function because it passes the vertical line test.
A function relates <u>each value of the input to one value of the output</u>, hence, option b is incorrect.
- On a graph, each value of x(horizontal axis) is mapped to a value of y(vertical axis), hence, a vertical line test can be applied to determine whether the relation is a function.
In this problem:
- For each day, there is only one output, which is her balance, hence, it passes the vertical line test.
To learn more about the function concept, you can take a look at brainly.com/question/12463448
Answer:
and 
.
Step-by-step explanation:
Start by adding 1 to both sides of this equation.
.
The square of what number or numbers will lead to the number "1"? It turns out that not only 
, but 
as well. In other words, the value 
can be either 1 or -1. Either way, the equation is still going to hold. That's the reason why there are two solutions to this equation.
Consider the case when 
. Add 10 to both sides of the equation. 
.
Now, consider the case when 
. Again, add 10 to both sides of the equation, 
.
Order the two solutions in an increasing order:
- ,
- .
