Question 1

The formula for the surface area of a right rectangular prism is $A-2lw +2hw +2lh$, where $l$, $w$, and $h$ represent the length, width, and height, respectively. Which term of this formula is $not$ dependent on the height?

Accepted Answer

$2lw$

Answer

$2hw$

Answer

$2lh$

Answer

$A$

Question 2

Which expression is equivalent to $16x^4-64?$

Accepted Answer

$(4x^2+8)(4x^2-8)$

Answer

$(8x^2-32)^2$

Answer

$(8x^2+32)(8x^2-32)$

Answer

$(4x^2-8)^2$

Question 3

The trinomial $x^2-14x+49$ can be expressed as

Accepted Answer

$(x-7)^2$

Answer

$(x-7)(x+7)$

Answer

$(x+7)^2$

Answer

$(x-7)(x+2)$

Question 4

The amount Mike gets paid weekly can be represented by the expression $2.50a + 290$, where $a$ is the number of cell phone accessories he sells that week. What is the constant term in this expression and what does it represent?

Accepted Answer

$290$, the amount he is guaranteed to be paid each week

Answer

$2.50a$, the amount he is guaranteed to be paid each week

Answer

$2.50a$, the amount he earns when he sells $a$ accessories

Answer

$290$, the amount he earns when he sells $a$ accessories

Question 5

Mrs. Allard asked her students to identify which of the polynomials computations. below are in standard form and explain why.
I. ${15x^4-6x+3x^2-1}$
II. $12x^3+8x+4$
III. $2x^5+8x^2+10x$
Which student's response is correct?

Accepted Answer

Fred said II and III because the exponents are decreasing.

Answer

Tyler said I and II because the coefficients are decreasing.

Answer

Alyssa said II and III because they each have three terms.

Answer

Susan said only II because all the numbers are decreasing.

Question 6

The area of a rectangle is represented by $3x^2-10x-8.$ Which expression can also be used to represent the area of the same rectangle?

Accepted Answer

$(3x+2)(x-4)$

Answer

$(3x+4)(x-2)$

Answer

$(3x+2)(x+4)$

Answer

$(3x-4)(x+2)$

Question 7

The height of a ball Doreen tossed into the air can be modeled by the function $h(x)=-4.9x^2+6x+5,$ where $x$   is the time elapsed in seconds, and $h(x)$ is the height in meters. The number 5 in the function represents

Accepted Answer

the initial height of the ball

Answer

the maximum height the ball attained when thrown in the air

Answer

the time at which the ball was at its highest point

Answer

the time at which the ball reaches the ground

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