Hello! :)

Use a proportion to find how many seconds are needed to fold 5 shirts.
We are given that he takes 28 seconds to fold 2 shirts:
28 sec : 2 shirts
We are not given the amount of time needed for 5 shirts, which we need to solve:
x seconds : 5 shirts
Express in a fraction:

Cross multiply and simplify:

Therefore, he needs 70 seconds to fold 5 shirts.
Answer:
Lets break it down
( -8 x -8 ) = 64, because a negative x negative always equals a positive
-4 x 64 = -256, because a negative x positive always equals a negative
Your answer is -256.
I hope this helps!
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Answer:
y=x*7
Step-by-step explanation:
63=9*7
28=4*7
14=2*7
77=11*7
210,064,050 is your answer