Simplifying Expressions

- What is the value of -9x-7 when r=2?

- -25

- What is the simplified expression for _3cd-d(2c-4)-4d?

- -5cd

- What is the value of 3ab+5b-6 when a=1 and b=3?

- 0

- What is the simplified expression for 6(2(y+x))?

- 12y+12x

- what is the simplified expression 5ab+9ab-ab?

- 13ab

- which is the constant term of the algebric expression -2x^2+17-15x+7xy?

- 17

- What is the value of 5x+3 when x=4?

- 23

- What is the value of -3mn+4m-3 when m=2 and n=-4?

- 29

- How many terms are in the algebric expression -7+12x4-5y^8+x?

- 4

- How many terms are in the algebric expression 2y+3x-5x^2-9?

- 4

- What is the value of 4x-7 when x=4?

- 9

- What, if any, was Jane's Mistake?

- Jane incorrectly evaluated (-2)^2 in step 2

- What property of real numbers was used to transition from step 3 to step 4?

- inverse property of addition

- Oneta writes an algebric expression with three terms. The 4 term has a coefficient of -3, and the x-term has a coefficient of 1. The expression does not have a constant term, which expression could she have written?

- x-y^2-3y