1.5x+2.5y+3=0 6x-10y+6=0 how many solutions does this equation have

Write an algebraic expression for the word expression the quotient of c and 8

If 30 lb of rice and 30 lb of potatoes cost ? $27.60? , and 20 lb of rice and 12 lb of potatoes cost ? $15.04? , how much will 10 lb of rice and 50 lb of potatoes? cost?

Multiplying fractions by whole number 5 x 1/3=?