Sylvie finds the solution to the system of equations by graphing. y =2/3x + 1 and y = -2/3x-1. Which graph shows the solution to Sylvie's system of equations?

How many kilograms of a 5% salt solution and how many kilograms of a 15% salt solution must be mixed together to make 45kg of an 8% salt solution?

If t17 = 3 (t5) in an arithmetic progression, find t1 in terms of d.

The party planning committee has to determine the number of tables needed for an upcoming event. if a square table can fit 8 people and a round table can fit 6 people, the equation 150 = 8x + 6y represents the number of each type of table needed for 150 people.