Variables x and y are related so that, when lg y is plotted on the vertical
axis and Igx is plotted on the horizontal axis, a straight-line graph passing
through the points (4,8) and (8, 14) is obtained.

answer:   b

step-by-step explanation:

x2 = 16

x can not be a negative number because 16 is positive

the only answer would be positive 8  

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

answe: it will take 4.5 hours for naomi and clair to paint an equal number of square feet

hope i

-lavira : )