In the equation 3x = 12 what step isolates the variable?
a. divide by sides by 3
b. multiply both sides by 3
c. add 3 to both sides
d. subtract 3 from both sides

For each proportion find the unknown number x 1/5/8=×/15

The weight v of an object on venus varies directly with its weight e on earth. a person weighing 120 lb on earth would weigh 106 lb on venus. how much would a person weighing 150 lb on earth weigh on venus?

Written as a simplified polynomial in standard form, what is the result when (2x+8)^2(2x+8) 2 is subtracted from 8x^2-38x 2 −3?