you need 4 teaspoons of cinnamon to make a cake if you up the recipe and use 6 teaspoons of cinnamon what percent increase does this represent?

How can writing phrases as algebraic expressions you solve problems?

What are the solutions for the following system? -2x^2+y=-5 y=-3x^2+5

Which is an equivalent equation solved for r? the circumference of a circle can be found using the formula c = 2πr. r=cπ r=c(2π) r= c over 2π r= 2π over c