Why must every polynomial equation with real coefficients of degree 3 have at least one real root?

At 6 1/2¢ per pound of string beans, how much does 7 pounds cost?

A seal went 25 feet below sea level to catch a fish. A sea lion dove 10 feet less than three times as deep as the seal to catch a larger fish. Which expression represents the sea lion's position in relation to sea level? a. 3 (25) - 10 b.

A map of a city is on a coordinate graph. The school is located at (4,-30) (4,-30), the park is located at (4,10) (4,10), and the library is located at (-10,-30) (-10,-30). What is the distance from the school to the library?

A store sells small notebooks for $7 and large notebooks for $10. If a student buys 6 notebooks and spends $54 , how many of each size did he buy?

The taxes on a pieces of property valued at 4000 were 66 at this rate what would be the taxes on property valued at 5500

A car decelerates at a constant rate as it approaches a red light. The velocity of the car in meters per second as it decelerates is modeled by the function f (x) = - 4x+20, where x is time in seconds.

Consider three persons, A, B, and C, who are to be seated in a row of three chairs. Suppose A and B are identical twins. How many seating arrangements of these persons can there be If you are a total stranger?

A cell phone company surveyed 200 random customers on whether they were satisfied with their phone service. They also noted which service plan each customer had.

Ksenia wants to chop broccoli and carrots for a competition. Her goal is to chop at least 20 vegetables (condition A) with a time limit of 540 seconds (condition B). What is the least number of carrots Ksenia must chop to meet both her constraints?

I started at my house at (-3,5) and started driving to fredericksburg. i got a flat tire halfway at (10,-5) how far would my whole trip have been if i didn't get a flat tired?