If y=1/2 when x=5, find y when x=7, given that y varies directly with x.

Which of the following expressions is equal to 2x^2+8

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

Wich statement could be used to explain why the function h(x)= x^3 has an inverse relation that is also a function