Ricardo and Kim rowed their canoes from their base camp to a fishing camp. They rowed a distance of x miles upstream on one rive
2 answers:
Answer:
The required expression is 3x²+ 3x.
Step-by-step explanation:
It is given that Ricardo and Kim rowed their canoes from their base camp to a fishing camp.
They rowed a distance of x miles upstream on one river, (3x²-9) miles downstream on another river, and (2x + 9) miles across a calm lake.
Distance covered in upstream = x miles
Distance covered in downstream = (3x²-9) miles
Distance covered in calm lake = (2x+9) miles
Total distance covered by Ricardo and Kim is
On combining like terms we get
Therefore the required expression is 3x²+ 3x.
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Answer:
B
Step-by-step explanation:
The equation of a line in slope- intercept form is
y = mx + c (m is the slope and c the y- intercept )
Calculate m using the slope formula
m = (y₂ - y₁ ) / (x₂ - x₁ )
with (x₁, y₁ ) = (0, 6) and (x₂, y₂ ) = (6, 0)
m = =
= - 1
Note the line crosses the y- axis at (0, 6 ) ⇒ c = 6
y = - x + 6 or y = 6 - x ⇒ B