The mean number of hours per day spent online according to a national survey is 7 hours, with a standard deviation of 3 hours. If each time was increased by 2 hours, what would be the new mean and standard deviation? Justify your answers with the proper
work or explanation.

Iam trying to solve a linear equation for the shoe size of someone 84" tall taking into consideration example 1 is 69" tall with a shoe size of 9 and example 2 is 72 inches tall with a shoe size of 11. i understand that the equation should be y=mx+b and that on the graph the answer is (3,2) but i just don't understand how to create the equation to solve for 84-inches and 60-inches tall questions. after two days, i need .

Alana has 12.5 cups of flour with which she is baking four loaves of raisin bread and one large pretzel. the pretzel requires 2.5 cups of flour to make. how much flour is in each loaf of raisin bread? explain the steps to follow to get the answer.

Rewrite the following quadratic functions in intercept or factored form. show your work. y = 5x^2 + 10x