Katrina is solving the equation X-2(x+3) = 4(2x+3)-(x+4). Which equivalent equations might Katrina use? Check all that apply.
Ox-2x- 6 - 8x+12-X-4
x-2x+6=8x+12- X+4
x-2x-6 = 8x+ 12- X+4
Ox-2x+3 - 8x+ 3 - X+4
-X-6-7x+8
0-x+ 6-7X+ 16
O-X-6-7X+16
-X+3 = 7x+7

At wind speeds above 1000 centimeters per second (cm/sec), significant sand-moving events begin to occur. wind speeds below 1000 cm/sec deposit sand and wind speeds above 1000 cm/sec move sand to new locations. the cyclic nature of wind and moving sand determines the shape and location of large dunes. at a test site, the prevailing direction of the wind did not change noticeably. however, the velocity did change. fifty-nine wind speed readings gave an average velocity of x = 1075 cm/sec. based on long-term experience, σ can be assumed to be 245 cm/sec. (a) find a 95% confidence interval for the population mean wind speed at this site. (round your answers to the nearest whole number.) lower limit cm/sec upper limit cm/sec