Use
x
for your variable.

The difference of three times a number and six is nine more than the number.

Which expression is equivalent to 2x^2+7x+4?

Graph the line that represents a proportional relationship between d and t with the property that an increase of 33 units in t corresponds to an increase of 44 units in d. what is the unit rate of change of dd with respect to t? (that is, a change of 11 unit in t will correspond to a change of how many units in d? )

2. explain in words how you plot the point (4, −2) in a rectangular coordinate system.