Open Ended: Sam and Annika ride their bikes to school. Sam rides his bike k kilometers. Annika rides her bike 2 less than 4 times as many kilometers as Sam rides.

Part A: Write an expression to represent how many kilometers Annika rides her bike to school.

What is the value of x? enter your answer in the box. (cm)

Afarmer sells 9.5 kilograms of apples and pears at the farmer's market. 4/5 of the weight is the apples and the rest is the pears. how many kilograms of pears did she sell at the farmers market

The brain volumes (cm cubed) of 50 brains vary from a low of 904 cm cubed to a high of 1488 cm cubed. use the range rule of thumb to estimate the standard deviation s and compare the result to the exact standard deviation of 175.5 cm cubed, assuming the estimate is accurate if it is within 15 cm cubed