Gabriela believes that purchasing the sound system is an essential purchase . Does that mean buying a sound system is an essential purchase for everyone ? Why or why not ? Be sure to use the terms essential " and " discretionaryin your response.

Nick and nora are married and have three children in college. they have an adjusted gross income of 47,400. if their standard deduction is 12,600 itemized deductions are 14,200 and they get an exemption of 4000 for each adult and each dependent what is their taxable income

What is the value of x in the following equation. -x ^3/2 = -27

Cot(90° − x) = 1 the value of x that satisfies this equation is °. a. 60 b. 135 c. 225 d. 315