The formula p=0.01a^2 + 0.05a + 107 models a woman's normal systolic blood pressure, p, at age a. use this formula to find the age , to the nearest year, of a woman whose normal systolic blood pressure is 140mm hg.

Express in the simplest form: (x^2+9x+14/x^2-49) / (3x+6/x^2+x-56)

The cost of using a service is $0.25 per min. what equation correctly represents the total cost c, in dollars, for d days of use?

Which statements describe the solutions to the inequality x< -20 check all that apply. there are infinite solutions. each solution is negative. each solution is positive. the solutions are both positive and negative. the solutions contain only integer values. the solutions contain rational number values.