The volume of a spherical balloon with a radius 2.1 cm is about 39 cm cubed. Estimate the volume of a similar balloon with a radius of 10.5 cm.

fa tha first one you gonna add y to both sides

it look like this

x-y+y=6+y

x=y+6

therefore your answer is

x =y+6

fa tha second one

you gonna flip tha equation

it gonna look like x-4y=y

then add 4 to both sides

it gonna look like tha

x-4 +4 =y +4

so therefore tha answer is x=y+4

step-by-step explanation:

i pretty sure it is

answer: the answer is 110

in total they made   333.74 your welcome : d