Which method is most efficient method to use to solve 2x^2+5x-11=0

I need to write 3/4 as a percent

Find the perimeter of a rectangle with a length of 4x + 2 and a width of 2x.

Solve for x. - 0.84x≤168

Which number sentence below matches this word problem? Jen and Marcus got 15 miles up river before they ran out of gas. They floated 9 miles back down river before they reached the shore. How far did they get? A. 15 - 6 = 9 B. 9 + 15 = 24 C.

Wang Yong owes the bank $8500. To repay the debt, he paid a fixed amount back to the bank each month. After 12 months, his remaining debt was $6460. How much did Wang Yong pay each month? How long did it take Wang Yong to pay back his entire debt?

The graph shows that is translated horizontally and vertically to create the function.

Find two consecutive intergers whose sum is - 29

Tell whether each number is a solution to the problem modeled by the following equations mystery number: five more than - 8 times a number is 29. what is the number?

What is the rate of change of 6y=8x-40

Jack wants to know how much water a spherical ball can hold with a radius of 8 cm?