The results of ten coin flips were recorded in the table above. Find the experimental probability of a coin showing heads after being flipped. Round to the nearest tenth.

A. 0.3
B. 0.5
C. 0.7
D. 1.0

Use the x-intercept method to find all real solutions of the equation.x^3-10x^2+27x-18=0

In a survey of 1015 adults, a polling agency asked, "when you retire, do you think you will have enough money to live comfortably or not. of the 1015 surveyed, 534 stated that they were worried about having enough money to live comfortably in retirement. construct a 90% confidence interval for the proportion of adults who are worried about having enough money to live comfortably in retirement.

Which of the following represents the factorization of the trinomial below? x^2+7x-30