SIMPLIFY this expression. 3x + 8y + 13x

a. 11x + 13y
b.13x + 11y
c. 24xy
d. 6x + 8y

Antonio made a scale model of a building. the model's scale is 1 inch to 235 feet and its height is 3.5 inches. what is the exact height of the actual building? enter your answer in the box.

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

Which function is odd check all that apply a. y=sin x b. y=csc x c. y=cot x d. y=sec x