Where is the answer to the expression 4 − 8 located on a horizontal number line?

4 units to the left of 4
4 units to the right of 4
8 units to the left of 4
8 units to the right of 4

Anyone? 15m is what percent of 60m; 3m; 30m; 1.5 km?

Rewrite the following quadratic functions in intercept or factored form. show your work. f(x) = 3x^2 - 12

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.