A store sells small notebooks for ​$6 and large notebooks for ​$10. If a student buys 6 notebooks and spends ​$52​, how many of each size did he​ buy? He bought small notebooks and Large notebooks.
Please help me solve this

2people are trying different phones to see which one has the better talk time. chatlong has an average of 18 hours with a standard deviation of 2 hours and talk-a-lot has an average of 20 hours with a standard deviation of 3. the two people who tested their phones both got 20 hours of use on their phones. for the z-scores i got 1 for the chatlong company and 0 for talk-a-lot. what is the percentile for each z-score?

Aline passes through 3,7 and 6,9 what equation represents the line

Consider the input and output values for f(x) = 2x - 3 and g(x) = 2x + 7. what is a reasonable explanation for different rules with different input values producing the same sequence?