Answer:
Final cost of ticket = $205
Step-by-step explanation:
Speed limit is given: 60 miles per hour
Car travelling at a speed of: 78 miles per hour
Car is exceeding speed limit by: 78 - 60 = 18 miles per hour
We are given that the dine ticket includes $25 plus $10 for each mile over the speed limit:
Final cost of ticket = $25 + (miles over speed limit * 10)
= 25 + (18*10)
= 25 + 180 = $205
To find the value of f(3) we need to follow the below steps :
Step 1 : First plot the graph of f(x)
Step 2 : We need to find f(3) or the function value at x = 3 therefore, in the graph locate the point (3,0)
Step 3 : Draw a line parallel to Y-axis passing through the point (3,0) .
Step 4 : Now there exists two cases :
If the drawn line do not intersect the graph of f(x), then no value of f(3) exists for the given function of x
If the drawn line intersects the graph, then the intersection point is marked and a line parallel to x - axis is drawn passing through that marked or intersection point. And the line where it intersects the y - axis is our required value of f(3).
If this is wrong than I guess I wasn't smart enough :)
D. x=<span>−<span>4
Why?
</span></span>Let's solve your equation step-by-step.
<span><span>2<span>(<span>x−7</span>)</span></span>=<span><span>10x</span>+18
</span></span>Simplify both sides of the equation.
<span><span>2<span>(<span>x−7</span>)</span></span>=<span><span>10x</span>+18
</span></span><span>Simplify:
</span><span><span><span>2x</span>−14</span>=<span><span>10x</span>+18
</span></span>Subtract 10x from both sides.
<span><span><span><span>2x</span>−14</span>−<span>10x</span></span>=<span><span><span>10x</span>+18</span>−<span>10x
</span></span></span><span><span><span>−<span>8x</span></span>−14</span>=18
</span>Add 14 to both sides.
<span><span><span><span>−<span>8x</span></span>−14</span>+14</span>=<span>18+14
</span></span><span><span>−<span>8x</span></span>=32
</span>Divide both sides by -8.
<span><span><span>−<span>8x</span></span><span>−8</span></span>=<span>32<span>−8
</span></span></span><span>D. x=<span>−<span>4</span></span></span>
Answer:
B
Explanation: If u use a number line you will understand the concept. So it goes 2,1,0,-1,-2. That decreased 5 times.
