Try, check, and revise or write an equation to solve: Aaron bought 6 books and 2 notebooks for $ 46.86. Erin bought 2 books and 6 notebooks for $ 27.78. Does 1 book cost?​

The decibel level of sound is 50 db greater on a busy street than in a quiet room where the intensity of sound is watt/m2. the level of sound in the quiet room is db, and the intensity of sound in the busy street is watt/m2. use the formula , where is the sound level in decibels, i is the intensity of sound, and is the smallest sound intensity that can be heard by the human ear (roughly equal to watts/m2).

Select the correct answer from each drop-down menu. the length of a rectangle is 5 inches more than its width. the area of the rectangle is 50 square inches. the quadratic equation that represents this situation is the length of the rectangle is inches.

Which shows the first equation written in slope-intercept form? 1/2 (2y + 10) = 7x