1
A book’s price was increased by 30% its original price. If the sale price of the book is $18.00, what was the original price of the book? (Assume there is no sales tax.)

2
A book’s price was dropped by 15% of its original price for a launch sale. If the sale price of the book is $27.00, what would be the price if it dropped by 25% instead? (Assume there is no sales tax.)

3
The book’s price was dropped by 15% twice. What percent of the original price is the new price, after the 2 price reductions?

4
\( y = -b(x + b)^2 – a \)
If b is a negative number and a is a positive number, which is true about the parabola?

Its minimum is in quadrant I.

Its maximum is in quadrant II.

Its minimum is in quadrant IV.

Its minimum is in quadrant III.

5
\( y = -3(x – p)(x + 10) \)
What is p if the maximum of the function is at x = -1?

6
\( y = 6(x – p)(x – q) \)
What is the value of p + q if the vertex of this function is at (4, -9)?

7
\( y = -b(x – b)^2 – a \)
If b is a positive number and a is a negative number, which is true about the parabola?

Its minimum is in quadrant II.

Its maximum is in quadrant II.

Its minimum is in quadrant IV.

Its maximum is in quadrant I.

\( b(x + a) = 6x + 5 \)
In the equation above, a and b are constants. If the equation has infinitely many solutions for x, what is the value of b ?

\( bx(x + a) = 4x^2 + 2.5x \)
In the equation above, a and b are constants. If the equation has infinitely many solutions for x, what is the value of b ?