A rectangle measuring 7 cm by 4 cm is enlarged by a ratio of 2:1.
a) What is the area of:
i) the original rectangle?
ii) the enlarged rectangle?
b) By what ratio has the area been enlarged?

An an average person has 6×10 by the power of two as many red blood cells as white blood cells a small sample of the blood has 7×10 by the power of three white blood cells about how many red blood cells are in the sample

Identify a1 and r for the geometric sequence an= -256(-1/4) n-1

Fanny mendelssohn manages all the magazines and paperback books at a local grocery store. she prices many paperbacks to sell at $7.99. the cost to the store is $5.29. what is the markup rate on a paperback book, based on its cost?