Arectangle has an area of 18 m squared and the perimeter of 18 m what r its lengths and widths

Astudent must have an average on five test that is greater than it equal to 80% but less than 90% to receive a final grade of b. devon's greades on the first four test were 78% 62% 91% and 80% what range if grades on the fifth test would give him a b in the course? ( assuming the highest grade is 100%)

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

Suppose the equation ||x-a|-b|=2008 has 3 distinct real roots and a not =0. find the value of b.