Which expression is a sum of cubes? A) -24^15 + 125b^18
B) -64a^27 + b^8
C) 27x^9+y^6
D) 81x^24 + 8y^40

$4

step-by-step explanation:

$30×5=$150

$150 minus $130=$20

$20÷5=$4.

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30.5*10=350$

you have to multiply the number without the decimal point then add it later but if its tenn u must move the place value of the decimal point 1 to the right.

2y+y=5

add 2y and y