Hi! I’m doing these problems for a geometry homework and I’m hella confused? can somebody help me please? (and could you include your work so that I know how to solve them in future?) thank you so much! *I’ll give points* :)

Write the equation for the parabola that has x− intercepts (−2,0) and (4,0) and y− intercept (0,4).

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.

Hich polynomial correctly combines the like terms and expresses the given polynomial in standard form? 8mn5 – 2m6 + 5m2n4 – m3n3 + n6 – 4m6 + 9m2n4 – mn5 – 4m3n3