Suppose $f$ Is a Linear Function Of $x$ the Slope Is 2

Multiple Choice

Suppose $f$ is a linear function of $x$ . The slope is 2.16. An increase of 7 units in $x$ causes what change in $f$ ?

A) A decrease of 15.12 units
B) An increase of 15.12 units
C) An increase of 3.24 units
D) A decrease of 3.24 units