Find the largest interval centered about x = 0 for which the given initial-value problem has a unique solution. (Enter your answer using interval notation.) y'' + (tan(x))y = ex, y(0) = 1, y'(0) = 0

Christine went shopping and bought each of her six six nephews a? gift, either a video costing? $14.95 or a cd costing? $16.88. she spent ? $ 97.42 97.42 on the gifts. how many videos and how many cds did she? buy?

Find the balance at the end of 4 years if 1000 is deposited at the rate of

Give the equations of two different lines that are perpendicular to the line 3x + 4y = 7.