Inverse trig Find the measure of each angle indicated. Round to the nearest tenth.

Plz help me out, thx!

Solve the system of equations y= 3/2 - 1, -x+ y =-3

Evaluate the expression for the given value of the variable. ∣-4b-8∣+∣-1-b^2 ∣+2b^3 ; b=-2

The approximate line of best fit for the given data points, y = −2x − 2, is shown on the graph.which is the residual value when x = –2? a)–2 b)–1 c)1 d)2