Ricardo took the following steps to simplify the expression below but was surprised to hear that his answer was incorrect. Which of the following best describes Ricardo's mistake?
2x + 3x(x - 3)-4
52(x-3) - 4
5x2 – 15x-4
A. Ricardo distributed incorrectly.
B. Ricardo multiplied monomials incorrectly.
C. Ricardo added before multiplying.
D. Ricardo multiplied before adding.

Name the most appropriate metric unit for each measurement like the mass of cow

Assemble the proof by dragging tiles to the statements and reasons column

Afurniture manufacturer produces chairs and sofas. each chair requires 10 yards of fabric, and each sofa requires 20 yards of fabric. the manufacturer has 300 yards of fabric available. to fulfill orders, the number of sofas must be at least twice the number of chairs. let x be the number of chairs and y the number of sofas. which inequalities are described in the problem? check all of the boxes that apply