Is the relation shown in the arrow diagram a function? Justify your answer. 0.4
0.8
1.2
2
4
6
8
Yes. The input 0.8 and 0.4 have only one output

Yes. Each output has only one input
No. Each input has only one output

No. The input 1.2 has 2 outputs.

What is the vertex form of f(x) = x2 + 6x + 3

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

Kelly is a salesperson at a shoe store, where she must sell a pre-set number of pairs of shoes each month. at the end of each work day the number of pairs of shoes that she has left to sell that month is given by the equation s=300-15x , where s is the number of pair of shoes kelly still needs to sell and x is the number of days she has worked that month. what is the meaning of the number 300 in this equation