A helicopter's altitude is changing at a rate of -12 feet per second. Find the change in altitude of the helicopter after 7 seconds.

-84 feet or goes down 84 feet

Step-by-step explanation:

-12*7

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:

triangle and cube

step-by-step explanation: