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1-7 Practice

Last updated over 3 years ago

11 Nsɛmmisa

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1.

Write the expression (x + 4)(x - 1) in standard form.

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9.

What is the maximum height of Rock A? (Round to the nearest tenth.)

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10.

What is the maximum height of Rock B? (Round to the nearest tenth.)

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11.

Explain how you know that Rock B will reach its maximum height first?

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2.

Write the expression (2x - 1)(3x - 1) in standard form.

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3.

Explain why the expression 8 - 6x + x² is not in standard form.

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4.

Explain or show why the expression (x - 4)(x - 2) is equivalent to 8 - 6x + x².

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5.

Which quadratic expression is written in standard form?

A. (x + 3)x

B. (x + 4)²

C. -x² - 5x + 7

D. x² + 2(x + 3)

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6.

Explain why 3x² can be said to be in both standard form and factored form.

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7.

Jada dropped her sunglasses from a bridge over a river. Which equation could represent the distance y fallen in feet as a function of time, t, in seconds?

A. y = 16t²

B. y = 48t

C. y = 180 - 16t²

D. y = 180 - 48t

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8.

Select all the statements that are true about this situation.

A. The football is thrown from ground level.

B. The football is thrown from 6 feet off the ground.

C. In the function, -16t² represents the effect of gravity.

D. The outputs of h decrease then increase in value.

E. The function h has 2 zeros that make sense in this situation.

F. The vertex of the graph of h gives the maximum height of the football.