For 6 days of very hot weather, the water level in a lake dropped 4 inches per day. On the sixth day, storms raised the level 5 inches. Write and find the value of an expression for the change in the water level of the lake during these 6 days.

none of the above.

for one of the equations to be used in the process, there has to be a term in the equation since squared is .

since there is only a term in the first equation, we cannot derive a from completing the square.

solving with completing the square

answer: domain and range mean all possible values of x and y that could be substituted to the inequality. a solution means all possible values that make the inequality statement true. so while the range is still all real numbers, the solution is the shaded area, for which y will always be greater than the line of the function.

answer: give more info

step-by-step explanation: