Which expression could represent the additive inverse property? A) −9 + 0 B) −9 −9 C) −9 + 1 D) −9 + 9

Emily and her feiends qent to the park. they saw 15 robins and 9 blue jays. how many birds did they see? explain how you decided what number sentence to write.

Solve with work both bert and ernie received an increase in their weekly salaries. bert's salary increased from $520 to $520. ernie's salary went from $580 to $645. find the percent of increase for each salary. what was the larger of the two percents ?

Asurvey of 45 teens found that they spent an average of 25.6 hours per week in front of a screen (television, computer, tablet, phone, based on the survey’s sample mean, which value could be the population mean? 2.3 hours 27.4 hours 75.3 hours 41.5 hours