Solve the equation for all real solutions. 9z^2-30z+26=1 Please help

Asystem of equation is shown below 6x - 2y equals 3 . and 5x + 3y equals 4. would you solve by substitution or elimination? and why

The table below shows the height of a ball  x  seconds after being kicked.  what values, rounded to the nearest whole number, complete the quadratic regression equation that models the data? f(x)  =  x2  +  x  +  0based on the regression equation and rounded to the nearest whole number, what is the estimated height after 0.25 seconds?   feet

An air conditioning system can circulate 350 cubic feet of air per minute. how many cubic yards of air can it circulate per minute?