Find the base in the following problem.

10% of __is 81.
8.1
81
810
8100

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?

Which is the focus of a parabola with equation y2=4x

Using only odd number for numerators write two different subtraction problems that have a difference of 3/4