Which problem can be solved using this equation 400+100c=550+70c

For what value of jn is mn parallel to kl

In two or more complete sentences, formulate how to use technology to calculate the appropriate regression model for the given data. you are not required to find the model, just choose the appropriate regression and explain how to use the technology. (-5,,2.,0.8), (0,-0.5), (2,-1.3), (3,-0.8), (5,2)

Write numerical coefficient of y² in the expression 2x² - 15xy – 7y²