Marta bought 3 yards of fabric at $6.98 per yard and 4 yards of a different fabric for $4.50 per yard. Which expression could be used to find the amount of her purchase?

Apolynomial has two terms. check all of the factoring methods that should be considered. common factor difference of cubes sum of cubes difference of squares perfect-square trinomial factoring by grouping

Is the number 128.439 a rational number

Solve for the equation. 4x - 13 = 2x + 9