20 POINTS! HELP!! Suppose a normal distribution has a mean of 49 and a standard deviation of 5. What is the probability that a data value is between 48 and 52? Round your answer to the nearest tenth of a percent.
A. 28.8%
B. 26.2%
C. 30.5%
D. 31.1%

Find the value of x for which abcd must be a parallelogram -9-6x x-30

Which expression is equivalent to 8(k + m) − 15(2k + 5m)?

Steve wants to develop a way to find the total cost of any item including sales tax. the sales tax in his city is 6%. his friend jenna writes the expression x + 6x where x is the cost of the item. explain whether her expression is correct based on the situation.