Grandma millie is shrinking! her height decreases by 1/4 cm each year. what is her total change in height over 3 years?

For the equations below which statement is true ? -2x=14 6x=-42

Askyscraper is 396 meters tall. at a certain time of day, it casts a shadow that is 332 meters long.at what angle is the sun above the horizon at that time?

Does anyone know how to solve and graph this: 4 + | a + 2 | < 7the only part i don't get is the "4 +"