2.39 - 1.30 = 1.09 (no)
0.63 + 1.25 = 1.88 (no)
-2.96 + 4.35 = 1.39 (yes)
-5.66 + 1.25 = 4.41 (no)
C(x) = 4x³+7x²-14x-6
Step-by-step explanation:
Given that the amount of water used in normal days is given by the equation;
W(x) = 5x³ +9x²-14x +9 -----(i)
The amount of decrease in water used is modeled by the equation;
D(x)= x³+2x² +15--------(ii)
To get the function C(x) that models the water used by the car wash on shorter day you subtract equation (ii) from equation(i)
5x³ +9x²-14x +9
- x³+2x² +15
-------------------------
4x³+7x²-14x-6
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Subtraction in polynomials : brainly.com/question/2273346
Keywords : equation, modeled,
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It is 15 dollars per pound and the 0.6 is 8.87 dollars
<span>x = Malik’s speed in still water </span>
y = Julio’s speed in still water
3 mi/hr = speed of current
Against current:
(x-3)2 + (y-3)2.5 = 9.5
With current:
<span>(x+3)1 + (y+3)1.5 = 20.5 </span>Final answer was x=4 and y=6
The graph y=5-x contains the points (2,3) and (3,2). 3=5-2 is true and 2=5-3 is true, so (2,3) and (3,2) are on the graph.
