First equation: 3x + 5y = 15 Write a second equation that would create a system with one solution. then no solution and an infinite solution ​

Roger and natalie travel in similar cars. roger's car drives the two miles to school in 7.5 minutes. natalie drives the same distance in the opposite direction but in only 6.5 minutes. what is true of their velocities?

Which ahows the graph of the solution set of 6x+4y< 12

Aswimming pool had 2.5 million liters of water in it. some water evaporated, and then the pool only had 22 million liters of water in it. what percent of the water evaporated?