Perform the indicated operations on the following polynomials.

Add: 3x^3+4x^2-x+8 and x^3-7x^2+2x-16

Determine the value of y when x=15 if y=6 when x = 30

A cell phone plan includes 450 anytime minutes for $35 per month, plus $18.85 for a cell phone and $25 for a one-time activation fee. let x represent the number of months of service. write an equation in the form y equals mx plus b.

Which of the following expressions is incorrect? |-12| = 12 -|-12| = - 12 -|12| = 12 |12| = 12

The solutions to the equation - 4|x + 9 = - 8 are: A) 7, 11 B) 7, - 11 C) - 7, 11 D) - 7, - 11

For every 4 out of 65 people who visit the store will revive o free DVD. if 455 people visit the store how many DVDs were given away

Two boxes have the same volume. One box has a base that is 2 inches by 2 inches. The other box has a base that is 4 inches by 4 inches. How many times as tall is the box with the smaller base?

How would you add parentheses and brackets to make this sentence true: 45/2x4.7-4.4x6=54

A triangle has side lengths of 5, 9, and 12. Determine whether the triangle is right, acute, or obtuse. A triangle has side lengths of 5, 9, and 12. Determine whether the triangle is A. right B. acute C. obtuse

A cone has a diameter of 6 cm and a height that is five times the diameter using 3.14 for pie which of the following can be used to calculate the volume of the cone

Which of the following is the best estimate for the height of a ceiling? 9 inches 9 feet 9 yards 9 miles