What is the value of a in the following equation: -a = 3a + 8? a) 2 b) 4 c) -2 d) -4

An objects motion is described by the equation d= 4sin (pi t) what will the height of the object be at 1.75 seconds?

Marcus and cody both leave the park at the same time, but in opposite directions. if cody travels 6 mph faster than marcus and after 4 hours they are 64 miles apart, how fast is each traveling? solve using rare times time = distance.

Assume that y varies inversely with x. if y=1.6 when x=0.5 find x when y=3.2