Please can someone help me with these questions

Bricklayers can estimate the number of bricks they need to build a wall using the formula n - 7LH , where L and # are the length and height of the wall in feet, respectively 1. Which equation shows the bricklayer's formula solved correctly for H? A. H = 4 B. H = C. H -n-7L D. H= E. H -4 2. A wall is 20 feet long and requires 1,470 bricks to build. How high is the wall? 3. Dolbear's Law relates the number of chirps per minute made by Snowy Tree crickets, n, and the air temperature, T, in degrees Fahrenheit: T = 50+ . To predict the number of chirps at any temperature, rewrite the formula to solve for n. n= 4. The formula for the area of a trapezoid is A- 5 (b, + b, )h . Which shows how the formula can be rewritten correctly to find another valiable? Select all that apply. A. h=- 2A _ 2A-b b +b, B. h=_ C. b = ZA-2b D. b = ZA- 6 E. b = LA-h 6.5 5. Is15 a literal equation? Explain why or why not