Answer: 
Step-by-step explanation:
The exponential function will have this form:
We know that the function passes through the points 
and 
. Then, we can substitute the coordinates of the point into and solve for "a":
Then, we know that:
Now, we neeed to substitute the coordinates of the second point into and solve for "b":
Substituting the value of "b" into 
we can find "a":
Therefore, we get that the exponential function that describes the graph, is:
Answer:
10.91% decrease
Step-by-step explanation:
98/110 x 100 = 89.090909
100 - 89.0909 = 10.909090 to 2dp is 10.91%
Prime numbers are numbers that have only one factor pair; 1 and themselves.
Let's start from 21.
21 = 1 x 21, 3 x 7.
This has two factor pairs, this is not prime.
Let's try 22.
22 = 1 x 22, 2 x 11.
This also has two factor pairs, this is not prime.
Let's try 23.
1 x 23.
This is a prime number, as it only has one factor pair; 1 and itself.
23 is your prime number.
I hope this helps!
Answer:
750
Step-by-step explanation:
Answer:
Let x = the number of marbles Tim has
Let 2x = the number of marbles Sue has
x + 2x + 15 = 63
3x = 48
x = 16 marbles
Step-by-step explanation:
