If the dot product of two nonzero vectors v1 and v2 is zero, what does this tell us?

a. v1 = v2

b. v1 is parallel to v2.

c. v1 is perpendicular to v2.

d. v1 is a component of v2.

What is the axis of symmetry of the function f(x)=-(x+ 9)(x-21)

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

If the perimeter of the garden is 37 ft. the width is x and the length is 15 ft. what is the width of the garden in feet?