Which advancement in mathematics contributed to improvements in algebra? the use of formulas to show data
the use of vertical and horizontal axes
the development of multiplication
the substitution of letters for unknown numbers

Bella is about to be married in two months. when she shopped for the bridesmaids' gowns, her gown, and flowers for the ceremony, she spent a lot of time in deciding what to buy. she was not sure whether her parents, in-laws, and fiancé would like her selections. which form of purchase decision process is bella engaged in?

Opinion polls reveal that many people believe that the military buildup of the 1980s came at the expense of pressing domestic problems such as environmental pollution and deteriorating educational and transportation infrastructure. in short, people are becoming aware of

Characteristics of substistence farming include all of the following except a. the use of pesticidesb. shifting cultivation c. farmers that stay in one placed. the lack of tractors and machinery