There are two small tins and one big tin on these scales the two small tins each have the same mass. The mass of the big tin is 2.6kg What is the mass of one small tin

2y= 3 2 x−2 y = − 1 3 x + 1 y=− 3 1 x+1

Leslie started last week with $1200 in her checking account. during the week, she wrote the checks below.

Astudent must have an average on five test that is greater than it equal to 80% but less than 90% to receive a final grade of b. devon's greades on the first four test were 78% 62% 91% and 80% what range if grades on the fifth test would give him a b in the course? ( assuming the highest grade is 100%)