Answer: (a) car exhaust; (b) chemicals and (d) people
Step-by-step explanation:
Indeed, it all starts from people. They are the ones who use the cars and make the pollution happen. It is also people who use chemicals to pan and find gold, for example, polluting rivers.
The inverse of the funtion <span> f(x) = 4x
</span><span> f(x) = 4x
y = 4x
Swap out x with y
x = 4y
x / 4 = y
y = x / 4

Looks like none of the answer you have given are correct.
</span>
Distance = √(y2-y1)² + (x2-x1)²
d = √(-1+2)² + (0+7)²
d = √1² + 7²
d = √1+49
d = √50
In short, Your Answer would be √50 or 7.07 units
Hope this helps!
Answer:
I got a few: 220, 202, 200, 222
Step-by-step explanation:
One clock of any type costs $3.20. a clocks cost 3.2a. w clocks cost 3.2w.
Add 3.2a to 3.2w to find the total cost.
T = 3.2a + 3.2w
T = 3.2(a + w)
Both expressions above are correct answers.