In which of the following intervals is the function f(x)=4cos(2x-pi) decreasing x=pi/2 to x=pi x=0 to x=pi/2
x=pi/2 to x=3pi/2
x=pi to x=3pi/2

Answer this question only if you know the 30 points and

In a probability experiment, karen flipped a coin 76 times. the coin landed on heads 32 times. what percentage of the coin flips resulted in tails? round to the nearest percent. a. 58% b. 65% c. 42% d. 60%

If 1.4% of the mass of a human body is calcium, how many kilograms of calcium are there in a 165-pound man? 1.0 kg ca 5.1 kg ca 1.0 x 102 kg ca 5.1 x 102 kg ca