Help me please with this
Simplify.

5a-12a

(05.08a)triangle abc is transformed to similar triangle a′b′c′ below: a coordinate plane is shown. triangle abc has vertices a at 2 comma 6, b at 2 comma 4, and c at 4 comma 4. triangle a prime b prime c prime has vertices a prime at 1 comma 3, b prime at 1 comma 2, and c prime at 2 comma 2. what is the scale factor of dilation? 1 over 2 1 over 3 1 over 4 1 over 5

In which form is the following function written? y = - 2(x – 3)(x + 5)

The function f(x) = 14,600(1.1)* represents the population of a town x years after it was established. what was the original population of the town?