What is 9.931 times 10 to the fifth power in standard form?

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

Is the product of two rational numbers irrational or rational? first, make a hypothesis by multiplying two rational numbers. then, use variables such as x=a/b and y=c/d and the closure property of integers to prove your hypothesis.

Is the point (0, 8) on the x-axis or y-axis? how do you know?