Question 10:

Submit a+b copies every day and 30 copies every 30 days (a+b).

Eleven:

a8b

94_8c times 7=38(_= minus sign)

12:

Efficiency 150 divided by m

The total amount is 5 times

1 hour =60 minutes

C=a times t=50 times 60=3000.

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The second and third on the right

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(1) is still in balance.

(2) still in a state of equilibrium

(3) still in a state of equilibrium

(4)3

Adopt me!