Find the minimum and maximum value for the function with the given domain interval. W(x)= 1/x , given [1/7,1/12]

Need ! give step by step solutions on how to solve number one [tex]\frac{9-2\sqrt{3} }{12+\sqrt{3} }[/tex] number two [tex]x+4=\sqrt{13x-20}[/tex] number three (domain and range) [tex]f(x)=2\sqrt[3]{x} +1[/tex]

Jenisey has $24 to spend on seven pencils. after buying them she had $10. how much did each pencil cost.?

What is the value of x in the equation (2)3) (x+6)= -18 a. -36 b. -33 c. -24 d. -18