Answer: Scale factor = 2
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Explanation:
Pick on any pair of corresponding sides. I'll pick the right-most sides of each figure. For figure A, that would be the side of 40 units. Figure B has this corresponding side be 80 units long.
The scale factor is 80/40 = 2. This shows that figure B has sides 2 times longer compared to the corresponding sides on figure A.
So in short all you do is divide the corresponding side lengths. We divide in the format (figureB)/(figureA) because of the transition from A to B, and not the other way around.
n - a number
a number squared → n²
three more than → ... + 3
<em>three more than a number squared: n² + 3</em>
Answer: My guess is hes incorrect, its 500 because we know 5 tens is 50 and if we make it ten times 50 it is 500
0.875 should be your answer all you have to do is divide
hope that helped
Horizontal stretch by a factor of 2
