is constructed by making arcs centered at a and b without changing the compass width. which equation is not necessarily true?

a.
pq = ab

b.
ap = pb

c.
aq = bq

d.
ar = rb

Acoffee shop orders at most $3,500 worth of coffee and tea. the shop needs to make a profit of at least $1,900 on the order. the possible combinations of coffee and tea for this order are given by this system of inequalities, where c = pounds of coffee and t = pounds of tea: 6c + 13t ≤ 3,500 3.50c + 4t ≥ 1,900 which graph's shaded region represents the possible combinations of coffee and tea for this order?