7x+40... If you go to mathwarehouse.com you can type your question in and you'll get an answer in less than a second
7^0=1
7^1=7
7^2=7*7=49
7^3=7*7*7=343
etc... etc...
Answer:
A, B, C
Step-by-step explanation:
Got it right on khan academy
244 - 165 = 79 . . . . one standard deviation
323 - 244 = 79 . . . . one standard deviation
The range of scores is ±1 standard deviation from the mean. The empirical rule says
68% of scores lie in that range.