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Volume word problems with fractions and decimals

Sal explains how to find the value of a rectangular prism fish tank that fractional side lengths.

Sal analyzes a couple of systems of equations and determines whether they have the same solution as a third given system.

Two-way frequency tables

Sal solves a word problem about distances walking and riding bus to school, by creating a system of equations and solving it.

Sal answers a word problem about a toy factory and finds that it has no solution.

Sal sorts various descriptions of real-world situation according to the type of growth they describe: linear or exponential.

Sal sorts various descriptions of real-world situation according to the type of growth they describe: linear or exponential.

Sal shows how, for acute angles, the two different definitions of the trigonometric values result in the same values.

Watch Sal scale up a unit vector to have a magnitude greater than 1.

Learn how to write basic expressions with variables to describe situations described in word problems.