Tina went skiing on her winter holiday with her family. On Saturday she was charged $55 for renting equipment for 5 hours. On Sunday she was charged $45 for 3
hours.
a. Write an equation for her equipment rental using appropriate variables. Show all
of your work for full marks.
b. What do your slope and y-intercept represent in this scenario?

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%

The average human heart beats 1.15 \cdot 10^51.15⋅10 5 1, point, 15, dot, 10, start superscript, 5, end superscript times per day. there are 3.65 \cdot 10^23.65⋅10 2 3, point, 65, dot, 10, start superscript, 2, end superscript days in one year. how many times does the heart beat in one year? write your answer in scientific notation, and round to one decimal place.

In angle pqr find the measure of