Ing slope of a graph
candle burning
the slope of the graph is -1. which statement
describes how the slope is related to the burning of a
candle?
candle height increases 1 cm per hour
candle height decreases 9 cm per hour
candle is cm tall
candle burns down 1 cm per hour
8
9
10
3 4 5 6 7
hours burned

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%)