Maria studied the effects of doing homework on her math quiz scores. Which
of these is a control variable?
O
A. Doing homework
O
B. Maria's math quiz scores
C. Both doing homework and Maria's math quiz scores
O D. Neither doing homework nor Maria's math quiz scores
SUBMIT

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?