50 lb of clay cost $16.50 what would it cost if it was 45 bl

To solve the system of equations below, grace isolated the variable y in the first equation and then substituted into the second equation. what was the resulting equation? 3y=12x x^2/4+y^2/9=1

Rewrite the following quadratic functions in intercept or factored form. show your work. y = 5x^2 + 10x

One number is 4 less than 3 times a second number. if 3 more than two times the first number is decreased by 2 times the second number, the result is 11. use the substitution method. what is the first number?