Answer:
(8,21)
Step-by-step explanation:
Since both equations equal y, set both equaitions equal to each other
and solve for x
4x-11=x+13 , subtract x from both sides
3x-11=13, add eleven to both sides
3x=24, divide both sides by 3 to get x alone
x=8
Substitute x=8 into either equation to solve for y
y=4(8)-11
y=32-11
y=21
90-20 leaves 70 for surfing. since surfing is 5 per hour, 70/5=14 hours she can surf.
Slope intercept is x=3, y=-3. Hope this helped!
Answer:
23
Step-by-step explanation:
Answer:
$955
Step-by-step explanation:
$5730
6 = $955