Estimate the area under the graph of f(x)=sqrt(x+1) over the interval [-1,15] using eight approximating rectangles and midpoints. need all work and answers please.

On any given day, the number of users, u, that access a certain website can be represented by the inequality 1125-4530 which of the following represents the range of users that access the website each day? u> 95 or u < 155 95> u> 155 u< 95 or > 155 95

What are the solutions of the system? solve by graphing. y = -x^2 -6x - 7 y = 2

2.5 milligrams is equivalent to how many grams