Raisins sell for $3.50 per pound, and granola sells for $5.90 per pound. terri bought some raisins and some granola. the total weight was 2.1 pounds and cost $8.79.
let r represent the number of pounds of raisins terri purchased.
which expression represents the number of pounds of granola she purchased?
a.
2.1 – r
b.
2.1r
c.
r + 2.1
d.
r – 2.1