explain in your own words how knowing the formula for the area of a parallelogram is useful for figuring out the area of a trapezoid. please help, thank you!

Ivan and jeff buy a package of 8 pens for $4.00. ivan wants 5 of the pens, and jeff wants 3.how much should each student pay?

He weights of 2-pound bags of best dog food are approximately normally distributed with a given mean  and standard deviation  according to the empirical rule, what percentage of the bags will have weights within 3 standard deviations of the mean? 47.5%68%95%99.7%

If abcde is reflected over the x-axis and then translated 3 units left, what are the new coordinates d? are he re