How can you tell if and equation has infinite or infinite many solutions

If f(x) = 2x + 2 and g(x) = x? , what is (gºf)(2)?

Solve for x -2.3(r - 1.2 ) = -9.66 enter you answer as decimal.

In each of the cases that follow, the magnitude of a vector is given along with the counterclockwise angle it makes with the +x axis. use trigonometry to find the x and y components of the vector. also, sketch each vector approximately to scale to see if your calculated answers seem reasonable. (a) 50.0 n at 60.0°, (b) 75 m/ s at 5π/ 6 rad, (c) 254 lb at 325°, (d) 69 km at 1.1π rad.