melanie has $1000 in a saving account at the beginning of the year. she wants to have at least $3000 in the account in future to purchase an used car . she saves $100 each month

are you asking how many months it will take her to reach her goal of 3000$ in that case the answer is 20 months

the first one is x^2+2x+2

the second one is x^2+4

the last one is x^2-4x+8

answer: the answer is one

step-by-step explanation:

pemdas, in this situation there is no parenthesis or exponents so you go to multiplication, 1x1=1, then division 1/1= 1 then addition 1+1=2 then subtraction 2-1=1