Anna can buy 12 muffins for $ 4.80 0r 6 muffins for $2.70. Which is the better deal. Explain using unit rates.

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)

Which inequality statement describes the two numbers on a number line? "? 7 and a number 5 units to the right of ? 7"

Write 5(6x+4)-2(5x-2) in the form a(bx+c) where a,b and c integers and a> 1