Which of the following are the solutions of cos (pie/6 + x) + sin(pie/3 + x)= 0 on the interval [0, 2pie)?

Players on the school soccer team are selling candles to raise money for an upcoming trip. each player has 24 candles to sell. if a player sells 4 candles a profit of$30 is made. if he sells 12 candles a profit of $70 is made. determine an equation to model his situation?

The ph level of a blueberry is 3.1 what is the hydrogen-ion concentration [h+] for the blueberry

The input to the function is x and the output is y. write the function such that x can be a vector (use element-by-element operations). a) use the function to calculate y(-1.5) and y(5). b) use the function to make a plot of the function y(x) for -2 ≤ x ≤ 6.