Answer:
5x²-7x+2
step by step explanation:
(f•g)(x) = f(x)•g(x)
(x-1)•(5x-2)
x×5x-2x-5x-1×(-2)
5x²-2x-5x+2
=5x²-7x+2
The factored inequality is 
<h3>Factoring Inequalities</h3>
The given inequality is:

This can be further simplified as:

The inequality can be re-written as:

Since the question does not state that we should solve the inequality, the simplest we can get after factoring is 
Learn more on factoring of inequality here: brainly.com/question/16789297
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This may not be correct, but i got 11520/7
Hope this helps.
Answer:
30 students
Step-by-step explanation:
Yesterday: 1/3 of the 75 students (75 / 3) = 25 students
There are now 50 students remaining to give their speeches.
Today: 2/5 of the 50 students (50 / 5 = 10 x 2 ) = 20 students
50 - 20 = 30 students remaining to give their speeches.