Kevin wants to earn more than $35 trimming trees. He charges $8 per hour and pays $5 in equipment fees. What are the possible numbers of hours Kevin could trim trees?

Which of the following points is collinear with (-2,1) and (0,3)

If the speed of an electromagnetic wave is 100,000 cm/s and its wavelength is 100 cm, what is its frequency? a) 100,000 cycles per second (hz) b) 1 × 10-3 cycles per second (hz) c) 10,000,000 cycles per second (hz) d) 1,000 cycles per second (hz)

What is the number 321,000,000 in scientific notation? also what is the number? ?