Factor by grouping.6tz – 22z + 18t – 66

Factor out the greatest common factor.30×4 – 48×2 + 15x

Find the value of n so that the expression is a perfect square trinomial and then factor the trinomial.x2 + 10x + n

Solve the system.-11x – 2y = 811x + 2y = 121

The current in a wire varies directly as the voltage and inversely as the resistance. If the current is 9 A (amps) when the voltage is 90 V (volts) and the resistance is 10 Ω (ohms), find the current when the voltage is 195 V and the resistance is 10 Ω .

Solve the radical equation, if possible.5t =

Solve the equation by using the quadratic formula.7y – 6 + 24y2 = 0

Determine the discriminant. Then use it to determine the number of x-intercepts that the function has.m(x) = -3×2 + 8x – 9

Graph the solution set of the compound inequality.3x – y ≤ -33x + 4y ≥ -18

The annual rate of return on an initial investment of P dollars is given by r = 1/t – 1where A is the current value and t is the number of years since the money was invested. Find the annual rate of return on a $22,000 investment that grew to $32,000 after 10 years. Round to the nearest hundredth of a percent.