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3 unknowns using Cramers Rule

Solves for 3 unknowns with equations in the form ax + by + cz = d using Cramers Method.

4 unknowns using Cramers Rule

Solves for 4 unknowns with equations in the form aw + bx + cy + dz = e using Cramers Method.

Binomial Multiplication (FOIL)

Multiplies out the product of 2 binomials in the form (a + b)(c + d) with 1 unknown variable.

This utilizes the First-Outside-Inside-Last (F.O.I.L.) method.

This utilizes the First-Outside-Inside-Last (F.O.I.L.) method.

Equation and Inequalities

Solves an equation or inequality with 1 unknown variable and no exponents as well as certain absolute value equations and inequalities such as |x|=c and |ax| = c where a and c are constants. Solves square root, cube root, and other root equations in the form ax^2=c, ax^2 + b = c. Also solves radical equations in the form asqrt(bx) = c. Also solves open sentences

Simultaneous Equations

Solves a system of simultaneous equations with 2 unknowns using the following 3 methods:

1) Substitution Method (Direct Substitution)

2) Elimination Method

3) Cramers Method

1) Substitution Method (Direct Substitution)

2) Elimination Method

3) Cramers Method

Unknown Number

Determines the unknown number needed to make an equation true.

If 3 pounds of apples cost 0.90, how much will 10 pounds cost?

A random sample of 144 with a mean of 100 and a standard deviation of 70 is known from a population

A random sample of n = 10 flash light batteries with a mean operating life X=5 hr. And a sample stan

Substitute the given values into given formula and solve for the unknown variable. S=4LW + 2 WH; S=