Please helppooo test

The border line of the linear inequality 4x + 7y < 5 is dotted true or false?

Simplify. (-2)^-3 a. -8 b. -1/8 c. 1/8 d. 8

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