Explain how using basic fact can find 10x20x30x40 mentally

How many grams the dog will eat in 3 days?

Find the zeros of each function. f(x) = 6x^2 - 7x - 20

The customer price index(cpi), which measures the cost of a typical package of customer goods,was 208.8 in 2011 and 244.1 in 2016.let x=11 corresponding to the year 2011 an estimate to cpi into 2013 and 2014. assume that the data can be modeled by a straight line and the trend to continue idenfinitely.use data points to find such a line and then estimate the requested quantities