A store allows customers to fill their own bags of candy, terri decides she only wants jelly beans and chocolate drops. jelly beans sell for $0.98 per pound, and chocolate drops sell for $0.67 per pound. terri's bag weighs 2.1 pounds and it costs 1$5.6 if p is the number of pounds of jelly beans terri purchase, what expression could be used to represent the number of pounds of chocolate drops she purchases?

a. 2.1-9

b. 2.1p

c. p 2.1

d. 9-2.1

Jelly beans - $0.98 per pound

chocolate drops - $0.67 per pounds

terri's bag = 2.1 pounds and $1.56

p = represents the pounds jelly beans.

c = represents the pounds in chocolate drops

p + c = 2.1

0.98p + 0.67c = 1.56

c = 2.1 - p; number of pounds of chocolate drops

0.98p + 0.67 (2.1 - p) = 1.56

0.98p + 1.41 - 0.67p = 1.56

0.98p - 0.67p = 1.56 - 1.41

0.31p = 0.15

p = 0.15/0.31

p = 0.48 pounds of jelly beans

c = 2.1 - 0.48

c = 1.62 pounds of chocolate drops.