easy math for adults not middle schoolers pls!

alexa is looking at the shape at top. she needs to
make several different figures that are similar to it.
if she uses the scale factor , will the new shape
that she creates be larger or smaller than the
original? justify your answer.
b. list two different scale factors alexa could use to make a smaller shape.
c. list two different scale factors alexa could use to make a larger shape.

Which of the fallowing best completes the sequence 12,8,5, a) 1 b) 2 c)4 d)0

Aswimming pool has an input pump for filling the pool and an output pump for emptying the pool. the input pump can fill the pool in 3 hours, and the output pump can drain the pool in 5 hours. as you go to bed, the pool is full, but a neighbor’s kid turns on the output pump. at midnight, you awake to find the pool half empty. immediately, you turn on the input pump, but you are sleepy and forget to turn off the output pump. at what time will the pool become full?

Which expression is equivalent to (4 +6i)^2? ? -20 + 48i 8 + 12i 16 - 36i 20 + 48i