Answer:
He needs 785 more minutes
Step-by-step explanation:
To solve the inequality 

The numerator
is not factorizable.
so factor the denominator
:

Now take 
Then we get factor of the denominator as 
Thus 
Now 
Signs of 

is the required solution of the given inequality.
Answer:
40
Step-by-step explanation:
3a + 2b =
3(10) + 2(5)
30 + 10 = 40
I hope this helps!
Have a great day!
500
Step-by-step explanation:
400 x 1.25 = 500 or just 400x0.25 +400