4. a. The population of Portland, Oregon, was 2.39 in 1990 and 2.36 million Ih represents the number of years since 1990, and P) represents the population (in mil- lions) at a given time, 1, summarize the given information in the accompanying table. P() b. Plot the two data points on appropriately scaled and labeled coordinate axes. Draw a line connecting the points. c. What is the slope of the line? What is the practical meaning of the slope in this situation? d. What is the P-intercept of the line? What is the practical meaning of the intercept in this situation? e. Write an equation to model Portland's population, P(t), in terms of t. f. Use this linear model to predict the population of Portland in 2020.

Q: one standart?

A: here use Empirical rule

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A: Use properties of circle

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Angles in Circles

Angles within a circle are feasible to create with the help of different properties of the circle such as radii, tangents, and chords. The radius is the distance from the center of the circle to the circumference of the circle. A tangent is a line made perpendicular to the radius through its endpoint placed on the circle as well as the line drawn at right angles to a tangent across the point of contact when the circle passes through the center of the circle. The chord is a line segment with its endpoints on the circle. A secant line or secant is the infinite extension of the chord.

Arcs in Circles

A circular arc is the arc of a circle formed by two distinct points. It is a section or segment of the circumference of a circle. A straight line passing through the center connecting the two distinct ends of the arc is termed a semi-circular arc.