Question 57442
1)1. Solve the equation 3(2x-1) + x = 5x + 3.
6x - 3 + x = 5x + 3
7x - 3 = 5x + 3
2x = 6
x = 3
b.
2)2. Use the quadratic formula to solve y2+10y+24 = 0.
{{{x = (-b +- sqrt( b^2 - 4*a*c ))/(2*a) }}}
{{{x = (-10 +- sqrt( 100 - 96 ))/(2) }}}
{{{x = (-10 +- 2)/(2) }}}
{{{x = -6}}} and {{{x = -4}}}
3)3. Solve by factoring: a2 - 5a - 14 = 0.
(x - 7)(x + 2) = 0
x = 7 and x = -2
d.
4)4. Solve the inequality 3x + 5< with - under < 7 . Write the solution using interval notation.
{{{3x + 5 <= 7}}}
{{{3x <= 2}}}
{{{x <= 2/3}}}
(-{{{inf}}},2/3]
c.