Solve ((tan^(2)x)/2) - 2cos^(2)x = 1 for 0 ≤ x ≤ 2pi

Sara sells beaded necklaces she makes a profit of 4 dollars pn every neclace she sells which table represents the profit sara makes

Maria walks a round trip of 0.75 mile to school every day.how many miles will she walk in 4.5 days

That table shows measurements (in invhes$ from cubes with different side lengths. which pairs of variables have a linear relationship? check all that apply