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Convert to exponential form: $ x = 2^5 $

A parabola given by $ y = x^2 - 4x + 3 $ intersects the x-axis at which two points?

Set $ y = 0 $: $ x^2 - 4x + 3 = 0 $

Factor: $ (x - 1)(x - 3) = 0 $

Solutions: $ x = 1 $ and $ x = 3 $

#### (1, 0) and (3, 0)

A circle has a circumference of 31.4 cm. What is its radius? (Use $ \pi \approx 3.14 $)

$ 31.4 = 2 \times 3.14 \times r $

Solve for $ r $: $ r = 31.4 / 6.28 \approx 5 $

A loan of $2,000 is taken at a simple annual interest rate of 6%. How much total interest is accrued over 4 years?

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