2+4x=2(2x+1) Which statements are true?

Select each correct answer.

There is no value for x that will make the equation true.

The equation is an identity,

The solution is 2.

There are infinitely many solutions.

The equation is a contradiction.

There are no solutions.

The equation is true for all values of x.

For what values of the variable x is the expression square root of 7x+14+ square root of 7-x a real number?

Ahigh-altitude spherical weather balloon expands as it rises, due to the drop in atmospheric pressure. suppose that the radius r increases at the rate of 0.02 inches per second, and that r = 36 inches at time t = 0. determine the equation that models the volume v of the balloon at time t, and find the volume when t = 360 seconds. v(t) = 4π(0.02t)2; 651.44 in3 v(t) = 4π(36 + 0.02t)2; 1,694,397.14 in3 v(t) = four pi times the product of zero point zero two and t to the third power divided by three.; 4,690.37 in3 v(t) = four pi times the quantity of thirty six plus zero point zero two t to the third power divided by three.; 337,706.83 in3

What are the solutions of the equation x4 – 5x2 – 14 = 0? use factoring to solve. someone !