Answer:
So you have the multiplication and substitution right. It's just the subtraction.
Step-by-step explanation:
Now, the equation was y = 4x - 2
In the first one x = -3
So it will be 4(-3) - 2
Note: Anytime you see a bracket it means multiplication.
4× -3 = -12 and
-12 - 2 = -14
This is because a negative number minus another number is always negative.
And when dealing with negative numbers you add them but you negate the answer.
For example;
The second one will be -8 - 2
And 8 + 2 = 10
But since the numbers are negative we just negate the 10 making it - 10.
I hope this helps
Answer:
12
Step-by-step explanation:
Rewrite 144 as 12^2
Pull terms out from under the radical, assuming positive real numbers.
Terms means: Any expression written as a product or quotient.
144 = 2 x 2 x 2 x 2 x 3 x 3
144 = 2^4 x 3^2
= 2^2 x 3
= 4 x 3
= 12
150 is the answer because 250 times 0.6 is 150