The velocity of a falling object is a linear function of the time t it has been falling. If  when  and

class="wirisformula" align="middle" style="vertical-align: middle;" data-wiris-created="true" varid="variable_id_field" variablename="impvar_8a37ef4b369d485c9ec4c1211" /> when , express v as a function of t.



What will be an ideal response?

---

Mathematics

Solve the problem.The equation for free fall at the surface of Planet X is  with t in seconds. Assume a rock is dropped from the top of a  cliff. Find the speed of the rock at 

A. 52.85 m/sec B. 108.7 m/sec C. 53.85 m/sec D. 107.7 m/sec

Multiply the conjugates. Assume all variables have nonnegative values.( + 1)( - 1)

A. 6
B. 4 - 2
C. 4 + 2
D. 4

Solve by using the multiplication principle to clear fractions. = y - 

A.
B.
C.
D.

Provide an appropriate response.Solve the system of equations using the substitution method:3x + y = 5x = -2y

A. y = -1, x = -2 B. x = 2,  y = -1 C. inconsistent; no solution D. dependent; many solutions