Directions: For problems 1-9 evaluate and simplify the following expressions. Remember that when writing algebraic expressions, it’s best to order them from the greatest amount of variables and coefficients to the least, and also place the variables in alphabetic order. For example, it’s best to write: 3 + 4x + y as 4x + y + 3. They both have the same value though regardless of the order.1. 2(x + 6) – 4 + x


2. (x +4) • 9


3. y + 7 + 8 – 7(x -8)


4. (4 – 5) + x(6 – 8)


5. y(4 – 8) – 3y


6. x + 8y – 16x(1- 3)


7. 82 – x(4 – 8) + √25


8. 53 – 4(y – 7y) - √81


9. x2 – 4 – 5y - √36 • √144 + 23(x – 5x)


Directions: For problems 10-14 solve the following expressions by substituting these values: x = 2, y = 3.


10. y(4 – 8) – 3y


11. x + 8y – 16x(1- 3)


12. 82 – x(4 – 8) + √25


13. 53 – 4(y – 7y) - √81


14. x2 – 4 – 5y - √36 • √144 + 23(x –5x)

If f(x) = 3x + 2 and g(x) = x^2 + 1, which expression is equivalent to (g(f(x))?

Use the cubic model y=5a^3-2a^2+a-45 to find the value of y when x=4.

Which graph correctly solves the system of equations below? y = − x2 + 1 y = x2 − 4A) quadratic graph opening up and quadratic graph opening down. They do not intersect.
B) quadratic graph opening up and quadratic graph facing down. They intersect at negative 2, negative 3 and 2, negative 3.
C) Two intercepting parabolas are shown, one facing downward and one facing upward. The downward facing parabola has a maximum at (0,1) and intercepts the x axis at 1 and negative 1. The upward facing parabola has a minimum at (0,-4) and intercepts the x axis at 2 and negative 2
D) two quadratic graphs opening up. They intersect at 0, negative 4.

Solve the inequality:

4|x+5| -2 <10

100 percent of blank = 60

Solve for blank. ​

Kwan said that the product of 5/6 × 2 1/3 is 10/3.How can you tell that his answer is wrong?