Question

the bar graph shows the rise or fall of a reservoir for the year.
change in water level of
mountainville reservoir
what was the difference in water level between march and april?
inches.
was this an increase or a decrease between the two months?
what was the reservoir’s net rise or fall over the entire year?
inches

Explanation:

Step1: Identify March's water level change

From the graph, March's change is -4 inches.

Step2: Identify April's water level change

From the graph, April's change is 2 inches.

Step3: Calculate the difference

Difference = April change - March change = $2 - (-4) = 6$ inches.

Step4: Determine increase/decrease

April's change is higher than March's, so it's an increase.

Step5: Sum all monthly changes for net result

Sum: $3 + 2 + (-4) + 2 + 1 + 4 + (-2) + (-5) + 3 + (-1) + 2 + (-2) = (3+2+2+1+4+3+2) + (-4-2-5-1-2) = 17 - 14 = 3$ inches.

Answer:

6 inches.
increase
3 inches.