Answer:
-7≤x≤7
Step-by-step explanation:
The domain is the input values
X goes from -7 to 7 inclusive
<h3>
Answer: Choice A</h3>
Arrow from 0 to -8 (pointing left). Another arrow from -8 to -6 (pointing right)
See diagram below
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Explanation:
Let's think of this in terms of money. Writing -8 means we are 8 dollars in debt. Since -8 is listed first, this means we start at 0 and go 8 units to the left along the number line, to land on -8.
Then we'll go 2 units to the right to land ultimately at -6. This is because of the "-(-2)" portion, which is the same as "+2". Subtracting a negative is the same as adding. The two negatives cancel each other out.
Going back to the money example, if we have a balance of -8 (we're 8 dollars in debt) and taking away 2 IOU notes means we're 6 dollars in debt. Subtracting a negative can be thought of as taking away debt.
Side note: If we had -8-2, then we would go 2 units to the left of -8 to land on -10 instead.
Here time can take any value starting from 0 to 6 hours.
So we say that valid input can be all real number from 0 to 6 hours
Option C is correct
Answer:
b = -57/10
Step-by-step explanation:
Let's first distribute everything out:
-8(1 + 5b) = -8 * 1 + (-8) * 5b = -8 - 40b
2(86 - 1) = 2 * 85 = 170
So, we have:
-8 - 40b - 170 = 50
-40b - 178 = 50
-40b = 50 + 178 = 228
b = -228/40 = -57/10
Thus, the answer is b = -57/10.
Hope this helps!