Answer:
50
Step-by-step explanation:
this can be solved by ratio 15/x = 30/100. Cross multiply and solve for x. The answer is 50.
Slope is -8/7 since it goes 7 to the right and 8 down.

On top: (-2)³ = -2 × -2 × -2 = -8
(x²)³ = x^6 (the exponents multiply)
and of course, (y)³ = y³
On the bottom: (xy²z)² = x² y^4 z²
(-yz)² = y²z²
Multiplying these together, the exponents add and we get x² y^6 z^4.

So, your reasoning is correct for what you have so far.
Your next step would be cancelling shared factors from the top and bottom.
Just like with regular fractions, if the numerator and denominator are divisible by the same number, you can divide them by it to simplify. (ex: 4/6 = 2/3)
Well, x^6 and x^2 are both divisible by x^2, right?
We can also cancel the y^3.
It might help to visualise the factors like this:

Once you've cancelled out x² and y³ from each, you're left with
Answer:
(a) (4, 5)
Step-by-step explanation:
The point-slope form of the equation for a line is ...
y -k = m(x -h) . . . . . . where m is the slope and (h, k) is the point
Comparing this to
y -5 = 1/2(x -4)
we see that k=5, m=1/2, h=4. Then the point is ...
(h, k) = (4, 5)