Alex had y toy cars. he gave 11 of them to his friend. later his dad bought him twice as many toy cars as he had in the beginning. how many toy cars did alex have in the beginning of this story if now he has 55 of them?

b

step-by-step explanation:

calculate the scale factor as the ratio of corresponding sides, image to original, that is

scale factor = = = = 1

exa:

)

3+11

14

step-by-step explanation:

from this example, we can see that subtracting with integers is the same as adding the opposite. we can solve using a number line or by using the saying "keep, change, change" to us solve. it is important to remember that we can subtract a negative and end up with a larger number than we started with.

step-by-step explanation:

step-by-step explanation: