Simplify the expression. left parenthesis 7 minus left parenthesis negative 1 right parenthesis right parenthesis squared plus left parenthesis negative 2 right parenthesis squared. Tip: To raise –2 to the second power, write (–2)(–2). A. 68 B. 60 C. 40 D. 32

1. there are 25 students who started computer programming in elementary school and 25 students who started computer programming in middle school. the first group had a mean final project grade of 95% and the second group had a mean final project grade of 92%. the line plot shows the differences after 10 rerandomizations. determine whether the difference in the means of the two groups is significant based on the line plot. explain your answer.

Aquantity with an initial value of 3900 decays exponentially at a rate of 35% every hour. what is the value of the quantity after 0.5 days, to the nearest hundredth?

Consider the graph of the exponential function y=3(2)×