Two linear are parallel if and only if their slopes are

One card is dealt from a 52 card deck. find the probability that the dealt card is a 4 or a black 7

Jackie purchased 3 bottles of water and 2 cups of coffee for the family for $7.35. ryan bought 4 bottles of water and 1 cup of coffee for his family for 7.15. how much does each bottle of water cost? how much does each cup of coffee cost?

How do businesses a country's economy? a. by investing in goods and services b. by increasing the unemployment rate c. by making profits