Answer:
25.5 mph
Step-by-step explanation:
So Bradley's speed can be modeled by the equation y=2x+40 where y=speed, x=time in hours after noon, and b=initial speed
So 12:15 is 15 minutes after noon, which is also 0.25 or 1/4 of an hour after noon. This is the x-value. Plug this into the equation to get his speed at 12:15
y=2(0.25)+40
y=0.5+40
y=40.5
So his speed was 40.5 at the time and since he was going 15 miles over the speed limit, the speed limit is 15 less than his speed
40.5 - 15 = 25.5
Answer:
Dependent
Step-by-step explanation:
and 
Lets solve the second equation for y and then substitute it in first equation
Subtract 6x on both sides
Divide by 2 on both sides
Now we plug it in first equation for y
Add 3x on both sides
Both sides are same, they are equal. the system has infinite solutions.
They are said to be dependent
Free parllel job the correct answer
Answer:
20%
Step-by-step explanation:
the difference is .50 .50 is 1/5 of the total amount. 1/5 is equal to 20%.
<em>-kiniwih426</em>
Answer:
y = -3x -16
Step-by-step explanation:
For problems like this, I like to start with a variation of the point-slope form of the equation of a line:
y = m(x -h) +k . . . . . for a line with slope m through point (h, k)
For your given values, this is ...
y = -3(x +3) -7
y = -3x -9 -7 . . . . eliminate parentheses; next, combine terms
y = -3x -16
Hope this helps! ;)
