Answer:
First question -> y = 2
Second question -> y = 10
Step-by-step explanation:
<u>Step 1: Solve y + 2 = 4</u>
Subtract 2 from both sides
y + 2 - 2 = 4 - 2
<em>y = 2</em>
<em />
<u>Step 2: Solve y - 2 = 8</u>
Add 2 to both sides
y - 2 + 2 = 8 + 2
<em>y = 10</em>
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Answer: First question -> y = 2
Second question -> y = 10
There is just one value in the first quadrant where:
sin x = cos x =

The point is (

) and x=45°=π/4
Answer:
h = hours
1.75h + 4 <_ 18
or 1.75h + 4 is less than or equal to 18