Which regression equation best models the data? a) y= 7.57 sin(0.55x + 0.68) + 64.40
b) y = 7.57 sin(0.68x + 0.55) + 64.40
c) y= 7.57 sin(-0.55x + -0.68) + 64.40
d) y = 7.57 sin(-0.68x + -0.55) + 64.40

Una caja de galletas contiene 16 paquetes y cada una de estas tiene 12 galletas y se quieren repartir entre 6 niños ¿de cuantas galletas le toca a cada niño?

Aliter of water contains about 3.35 x 10^25 molecules. a certain river discharges about 2.9x 10^8 l of water every second. about how many molecules does the river discharge every minute? write your answer in scientific notation

The bottom of ignacio's desktop is 74.5cm from the floor. ignacio's sits in his adjustable chair, and the tops of his legs are 49.3cm from the floor. each clockwise rotation of the knob on the chair raises ignacio's legs by 4.8cm. write an inequality to determine the number of clockwise rotations, r, ignacio could make with the knob without his legs touching the desk