The inflation rate of the u. s. dollar is 3.1 percent. what this means is that every year, prices increase by 3.1 percent. if a paperback book cost 1.98$ three years ago, what does it cost now?

a. 1.80$
b. 2.17$
c. 2.04$
d. 5.76$

The volume of gas a balloon can hold varies directly as the cube of its radius. imagine a balloon with a radius of 3 inches can hold 81 cubic inches of gas. how many cubic inches of gas must be released to reduce the radius down to 2 inches?

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Proportions in triangles solve for x