I think the answer c is the right answer
Assume that the number is n.
sum of twice the number and 15 means that you will first multiply the number by 2 then add 15.
the equation us:
2n + 15 = -42
2n = -42-15
2n = -57
n = -28.5
Answer:
gfygou
Step-by-step explanation:
Yes you are right from what i seen
