1. evaluate 6y^2 if y is -4.

2. evaluate -4xy if x is 4 and y is -5.

3. evaluate 8x^2 if x is 3.

4.simplify 6x^2y + 4xy − 7xy.

5. simplify 4x^2 + 3xy − 7xy + 2y^2.

6. multiply (5x^2)(4x).

7. divide (9x^2) by (3x).

8. divide (12xy) by (4y^2).

9. multiply (5)(4x^2).

10. multiply (3x)(2x^2).

One line passes through (-7,-4) and (5,4) . another line passes through the point (-4,6) and (6,-9)

The weight of full–grown tomatoes at a farm is modeled by a normal distribution with a standard deviation of 18.4 grams. the 95 percent confidence interval for the mean weight of the tomatoes is calculated using a sample of 100 tomatoes. what is the margin of error (half the width of the confidence interval)?

Which graph depicts the path of a projectile