The money used is Saudi Arabia is called the Riyal. The exchange rate is 4 riyals to $1. find how many riyals you would receive if you exchanged $21.50. Solve algebraically using variable(s)

If the graphs of the linear equations in a system are parallel, what does that mean about the possible solution(s) of the system? a. there are infinitely many solutions. b. there is no solution. c. there is exactly one solution. d. the lines in a system cannot be parallel.

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

Sara made $253 for 11 hours of work. at the same rate how much would he make for 7 hours of work?