Astudent earns $11.75 per hour of gardening. if the student worked 21 hours a month then how much did they earn?

Arectangle has an area of 54 square feet. if the length is 3 feet more than the width, find the dimensions of the rectangle.

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)

Express in the simplest form: (x^2+9x+14/x^2-49) / (3x+6/x^2+x-56)