Which expressions are equivalent to the one below? Check all that apply. 4^3 • 4^x
OA. (4. x)3
B. 64. 4x
C. 43x
D. 43 + x
E. 43- x
F. 163x

A33 gram sample of a substance that's used to detect explosives has a k-value of 0.1473. n = noekt no = initial mass (at time t = 0) n = mass at time t k = a positive constant that depends on the substance itself and on the units used to measure time t = time, in days

Which is the focus of a parabola with equation y2=4x

2,10,-50 next two numbers geometric sequence