Answer:
d
Step-by-step explanation:
IF there are 2 sweaters for the cost of s but then she bought 12$ sunglasses then and she wants to know the amount in total, then the answer sould be D. 2s+12=c to get the cost
Answer:
I am not in your grade that Is way to hard
Step-by-step explanation:

Answer:
b
Step-by-step explanation:
second option 400/3
Step-by-step explanation:
5x^2+2x=1
5x^2+2x-1=0
x=-b+/-√b^2-4ac÷2a
x=-2+/-√-2^2-(4×5×-1)÷2×5
x=-2+/+√4--20÷10
x=-2+/-√24÷10
x=-2+√24÷10 or -2-√24÷10
x=-2+4.9÷10 or -2-4.9÷10
x=2.9÷10 or -6.9÷10
x=0.29 or -0.69