If 10% of a number equals 30, find 40% of that number.

120

Step-by-step explanation:

So 10% of a number (let's use n) is 30.

The key word "of" tells us we need to multiply. Therefore, 10% times n is 30:

10% is the same as 0.1. So:

Divide both sides by 0.1:

So, our number is 300.

To find 40% of 300, multiply 0.4 and 300. Thus:

Our answer is 120.

And we're done!

step-by-step explanation:

the answer is y < -3 or   y > 3

-3y > 7 + 2

-3 y > 9

y < -3