To the nearest percent, what is the probability of rolling a 4 on a number cube?

The circumference of a redwood tree trunk is 20π ft, and it is 100 ft tall. what is the approximate volume of the redwood tree trunk? 1,000π ft3 10,000π ft3 4,000π ft3 40,000π ft3

[10 points, algebra 2]according to my answer key the restrictions are -1 and 4. but why not positive 1?

Find the maximum value of p= 4x + 5y subject to the following constraints :