Desmos Graphing Calculator

CalcReferenceCopy

Math·Algebra·Linear equations in two variables

easy

A train is traveling at a constant speed along a straight portion of railway. The equation $d=30t$ gives the distance $d$, in feet from a railway marker, that the train will be $t$ seconds after passing the marker. How many feet from the marker will the train be 3 seconds after passing the marker?

A

33

B

90

C

120

D

30