Brad built a rectangular brick wall in the back yard. the wall is 20 feet long and 6 feet high. the wall cost $9 dollars per square foot. how much did it cost brad to build a wall

The equation x2 – 1x – 90 = 0 has solutions {a, b}. what is a + b?

The number of potato chips in a bag is normally distributed with a mean of 71 and a standard deviation of 2. approximately what percent of bags contain between 69 and 73 potato chips? approximately 68% approximately 71% approximately 95% approximately 99.7%

Use the distributive law to multiply. 3(4x + 5y + 6)