3. (04.02 MC)

What is the exact value for the expression the square root of 189. − the square root of 21. + the square root of 84. ? Simplify if possible. (5 points)
the square root of 21.
6 the square root of 7.
4 the square root of 21.
24 the square root of 7.

Write an inequality and solve each problem.for exercises 11 and 12, interpret the solution.

Write the expression in complete factored form. 5n_(c - 3) - n(c - 3) =

An energy drink company claims that its product increases students' memory levels. to support its claims, the company issues advertisements claiming that 8 out of 10 people (chosen randomly from across the country) who tried their product reported improved memory. the missing component in this study is a .