Francesca wants to glue this 5-inch by 7-inch photo on top of a mat that will increase the length of each side by another x inches. Find an expression representing the area of the
mat, and use this expression to find the area and cost of the mat for different values of x.

Unaware that 35% of the 10000 voters in his constituency support him, a politician decides to estimate his political strength. a sample of 200 voters shows that 40% support him. a. what is the population? b. what is the parameter of interest? state its value c. what is the statistics of the interest? state its value d. compare your answers in (b) and (c) is it surprising they are different? if the politician were to sample another 200 voters, which of the two numbers would most likely change? explain