In 1 week ed works 4 days, 3 hours a
day, for $12 per hour, and 2 days,
6 hours a day, for $15 per hour.
simplify the expression 12(
43) +
15(
26) to find ed's weekly earnings.

The velocity of sound in air is given by the equation , where v is the velocity in meters per second and t is the temperature in degrees celsius. find the temperature when the velocity is 329 meters per second by graphing the equation. round the answer to the nearest degree. show your work.