What is the coefficient of x² +7x=0: Wich one?
A. a=1,b=0,c=7
B. a=7,b=0.0=7
C. a=0,b=1,c=7
D. a=0,b=0.c=7
E. a=1,b=7,C=0​

Marco has $38.43 dollars in his checking account. his checking account is linked to his amazon music account so he can buy music. the songs he purchases cost $1.29. part 1: write an expression to describe the amount of money in his checking account in relationship to the number of songs he purchases. part 2: describe what the variable represents in this situation.

X+ y = 5 ; x - y =3 solve using linear combination

Becca wants to mix fruit juice and soda to make a punch. she can buy fruit juice for $3 a gallon and soda for $4 a gallon. if she wants to make 28 gallons of punch at a cost of $3.25 a gallon, how many gallons of fruit juice and how many gallons of soda should she buy?