Answer:
10 = b
Step-by-step explanation:
Begin by expanding (x + 5)^2
(x + 5)(x + 5)
First: x*x = x^2
Outside: x * 5 (the last term which is a 5)
Inside: 5+ x
Last: 5*5 = 25
x^2 + 5x + 5x + 25
x^3 + 10x + 25
S=2g or y=2x because you are multiplying Christina score by two to get Sarah's score.
Answer:

Step-by-step explanation:
we know that
To find out the scale factor divide the corresponding dimensions of the model by the corresponding dimensions of the actual
so

simplify

That means
1 inch in the model represent 9 feet in the actual
Remark
Yes even though 8 is not a prime number. There is nothing that will divide into 3 or 8 the will give a whole number answer when the division is complete.
That means that 3 and 8 are prime to each other in base 10.