Use the relationship between the angles in the figure to answer the question. Which equation can be used to find the value of x?

x + 90 = 61
​x + 90 + 61 = 180​
​x + 61+ 90 = 90​
​x + 61 = 180​

Given (1+cosx)/(sinx) + (sinx)/(1+cosx) =4, find a numerical value of one trigonometric function of x. a. tanx=2 b. sinx=2 c. tanx=1/2 d. sinx=1/2

Solve 3x-18=2y and 5x-6y=6 by elimination show work

Me its important ! marge runs an ice cream parlor. her speciality is triple chocolate sundaes. she can prepare 1 sundae every 2 minutes, and she earns $1.20 for each sundae she makes . if she just makes sundaes for a single shift of at most 4 hours and at least 2 hours , which function relates her earnings to the number of minutes she works?