How can you solve quadratic equations in one variable using quadratic formula

The measure of the angles supplement is 30 more than four times that of its complement. find the measure of the angle described

Onstruct the grouped frequency table for the following data. 1, 1, 1, 1, 2, 2, 3, 4, 4, 4, 4, 5, 5, 5, 5, 5, 6, 6, 6, 6, 6, 7, 7, 7, 7, 8, 8, 8, 8, 9, 9, 9

After making a deposit puja had $264 in her savings account she noticed that if she added $26 to the amount originally in the account and double the sum she would get the new amount