Help me please if your nice

Find the percent error of the measurement 4 cm

Mahnoor randomly selects times to walk into a local restaurant and observe the type of music being played she found that the restaurant was playing country 11 times rock & roll 17 times and blues 8 times use the observed frequencies to create a probability model for the type of music the restaurant is playing the next time mahnoor walks in.

Problem ann increased the quantities of all the ingredients in a recipe by 60\%60%. she used 8080 grams (\text{g})(g) of cheese. how much cheese did the recipe require?