2(x+1)+3=7 how do i solve this? is this correct? 2(x+1)+3=72x + 2 +3=72x+2 +3=72x+5=7 -5 72x= 22 2 x=1

What is coefficient of the term of degree of degree 5 in the polynomial below

How do you write y-10=2 (x-8) in standard form

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.