Is 6z-2z+4 and 4+2z-6z equivalent?

Which of the fallowing best completes the sequence 12,8,5, a) 1 b) 2 c)4 d)0

1. a parachutist is 800 feet above the ground when she opens her parachute. she then falls at a constant rate of 5 feet per second. select the equation that represents this situation. h = -800t + 5 y = -5x + 800 h = 5t - 800 y = 800x + 5 i need

Write the summation to estimate the area under the curve y = 1 + x2 from x = -1 to x = 2 using 3 rectangles and right endpoints