Full-Length PSAT 10 Math Practice Test
☐A. \(\frac{5}{39}\) ☐B. \(\frac{6}{39}\) ☐C. \(\frac{6}{13}\) ☐D. \(\frac{5}{6}\) 9- If a parabola with equation \(y=ax^2+6x+16\), where a is constant, passes through point \((-2, 8)\), what is the value of \(a^2\)? ☐A. 1 ☐B. 2 ☐C. 3 ☐D. 4 10- If \(a, b\) and c are positive integers and \(4a=6b=10c\), then the value of \(2a+3b-4c\) is […]
