HELP ME

Tatiana reads 40 pages of her book every night for x number of nights. write an expression that shows the number of pages she has read

Add, subtract, multiply, or divide as indicated. list any restrictions for the variable(s) and simplify the answers when possible. 1) x-2 / x+5 + 3x / 2x-1 2) x+6 / x-6 - x^2 / x+6 3) x+9 / x-4 + x+2 / x^2-11x+28 4) x / x^2-64 + 11 / 2x^2+11x-40 5) 5 / x + 11 / x-3 - x-4 / x^2+2x-15

Given sin28.4=.4756, cos28.4=.8796, and tan28.4=.5407 find the cot of 61.6