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.
0.01A²+0.05A+107=140 0.01A²+0.05A-33=0 A²+5A-3300=0 (A+60)(A-55)=0 a=55 or -60 (ignore the negative number because Age cannot be negative) 55 is the answer.
