Robyn has 4 bags of 22 buttons and 1 bag of 17 buttons. Round the number of buttons in each bag to the nearest ten. Find the approximate number of buttons she has, and plot this value on the number line

The difference of 2 numbers is 21 and the quotient of the equation is 4 then what are the two numbers?

What is the standard form of -5x^2+2x^4-11+x^3+3x

Researchers were interested in whether relaxation training decreases the number of headaches a person experiences. they randomly assigned 20 participants to a control group or a relaxation training group and noted the change in number of headaches each group reported from the week before training to the week after training. which statistical analysis should be performed to answer the researchers' question?