Find the value of x in the equation: √(3x + 1) – √(x + 4) = 1

Data presentation: bar charts (compare categories), pie charts (show proportions), histograms (continuous data, area represents frequency), line graphs (show trends over time), frequency tables.

Measures of spread: range (highest – lowest), interquartile range (Q3 – Q1, middle 50%), standard deviation (spread around mean). Large spread = data more varied.

Cumulative frequency graphs show running totals. Used to find median (50th percentile), quartiles (25th, 75th percentiles). Box plots summarize data using minimum, Q1, median, Q3, maximum.