Sarahs investment in stock grew 16% to $522.how much did she invest.

Find the slope and the y-intercept if there's one and the equation of the line given these two points( 3, 2) and( 3, -4)

Julius sold five times as many computers as sam sold last year. in total, they sold 78 computers. how many computers did julius sell?

Scores on the cognitive scale of the bayley-scales of infant and toddler development range from 1 to 19, with a standard deviation of 3. calculate the margin of error in estimating the true mean cognitive scale score, with 99% confidence, if there are 12 infants and toddlers in a sample.