Sarabeth is selling bracelets as a fundraiser for the school library. each bracelet with blue beads sells for $4.50. each bracelet with red beads sells for $5. she raised a total of $130 for the library. the number of bracelets with red beads (r) that sarabeth sold is 3 less than twice the number of bracelets with blue beads (b) sold. if the table is used to guess and check, what equation should go in the top of the third column?

The blue whale is the largest animal living on the earth. the average blue whale measures 100 feet long (30 meters) and weighs 300,000 pounds (136,000 kilograms). a whale’s head is 1⁄3 of the length of its body. a new baby whale is 1⁄4 the length of a grown whale. the average man is 1⁄17 the length of a blue whale, and 1⁄1,818 its weight. a human baby measures 1⁄4 of the length of an adult. calculate the following information: how long is a whale’s head? how long is a new baby whale? how tall is the average man? how much does the average man weigh? how tall is the average human baby?

An automated water dispenser fills packets with one liter of water on average, with a standard deviation of 5 milliliter. the manual says that after a year of operation the dispenser should be tested to see if it needs recalibration. a year later a number of filled packets are set aside and measured separately. it is found that the average packet now contains about 0.995 liters. does the dispenser need calibration? explain your answer.

What would the rule be for the reflection of y=-3