The cost (in dollars) of making $b$ bracelets is represented by $4+5b$ . The cost (in dollars) of making $b$ necklaces is represented by $8b+6$ . Write a polynomial in standard form that represents how much more it costs to make $b$ necklaces than $b$ bracelets.

Find the center and the radius of the circle with the equation: x^2-2x+y^2+4y+1=0?

Someone answer asap for ! max recorded the heights of 500 male humans. he found that the heights were normally distributed around a mean of 177 centimeters. which statements about max’s data must be true? a. the median of max’s data is 250 b. more than half of the data points max recorded were 177 centimeters. c. a data point chosen at random is as likely to be above the mean as it is to be below the mean. d. every height within three standard deviations of the mean is equally likely to be chosen if a data point is selected at random.

Sketch the vector field vector f( vector r ) = 8vector r in the xy-plane. select all that apply. the length of each vector is 8. the lengths of the vectors decrease as you move away from the origin. all the vectors point away from the origin. all the vectors point in the same direction. all the vectors point towards the origin. the lengths of the vectors increase as you move away from the origin.