Rations Select all of the following tables which represent y as a function of I.
365
T
y
C
y
-5
val
-1
3
-2
2
1
4
-4
2
5
2
um
6
7
16
8
8
7
13
12
10
T
y
T
y
-5
-1
2
-1
3
1
-2
1
5
7
4
6
3
8
8
9
2
1
14
16
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13.46

step-by-step explanation:

16.80 x .20 = 13.46

hello from mrbilldoesmath!

answer:

(7 x + 6 y) (49 x^2 - 42 x y + 36 y^2)

discussion:

the trick is to recognize that 343 = 7^3 and 216 = 6^3 and, in general,

a^3 + b^3 =   (a + b) (a^2 - a b + b^2).

in our case

343x^3+216y^3   =   (7x)^3 + (6y)^3

so take a = 7x and b = 6y in the above equation to get the answer.

you,

mrb