From 1960 to 1970, the consumer price index (cpi) increased from 29.6 to
48.2. if a dozen donuts cost $0.89 in 1960 and the price of donuts increased
at the same rate as the cpi from 1960 to 1970, approximately how much did
a dozen donuts cost in 1970?

a. $1.79
b. $1.63
c. $1.45
d. $1.49

Alake near the arctic circle is covered by a sheet of ice during the cold winter months. when spring arrives, the ice starts to melt. s(t) models the ice sheet's thickness (in meters) as a function of time tt (in weeks). s(t)=-0.25t+4

The length of a rectangle is x times the square root of 100. the width is one-half y more than three-halves x. given that the area of the rectangle is 125 cm2, which equation could represent the rectangle in terms of x and y? a) 5xy − 15x = 125 b) 5xy + 15x = 125 c) 15x2 − 5xy = 125 d) 15x2 + 5xy = 125

What ratio is proportional to 18/21