Work out the surface area of the solid cuboid plss

Translate the word phrase into a math expression. 15 fewer than the product of 4 and a number. (pls immediately)

Me solve this problem, and someone clearly explain to me how to solve it.1.) use the value of the discriminant to determine if the given trinomials has 2 real solutions, 1 real solution, or no real solutions. a.  x2  − 4x  − 7 = 0b. 4r2  + 11r  − 3 = 0c. 3m2  + 7 = 0d.  t2  + 2t  + 1 = 0

The amount spent on food and drink by 20 customers is shown below what is the modal amount spent ?