Pearl solved a system of equations using substitution. Did she do it correctly? How do you know? If she did not find her error and solve the system correctly. 2x + (-5 - x) = 20 r-5= 20 X-5 + 5 = 20 + 5 x= 25 System: y=-5-X 2x + y = 20 Pearl's Solution: r = 25 y = -30

The data shown in the table below represents the weight, in pounds, of a little girl, recorded each year on her birthday. age (in years) weight (in pounds) 2 32 6 47 7 51 4 40 5 43 3 38 8 60 1 23 part a: create a scatter plot to represent the data shown above. sketch the line of best fit. label at least three specific points on the graph that the line passes through. also include the correct labels on the x-axis and y-axis. part b: algebraically write the equation of the best fit line in slope-intercept form. include all of your calculations in your final answer. part c: use the equation for the line of best fit to approximate the weight of the little girl at an age of 14 years old.

What is the number 321,000,000 in scientific notation? also what is the number? ?

Anew shopping mall is gaining in popularity. every day since it opened, the number of shoppers is 5% more than the number of shoppers the day before. the total number of shoppers over the first 10 days is 1258 how many shoppers were on the first day?