Proportion: $1 coupon / 3 salads = $10 in coupons / x salads
Solving proportion:
1/3 = 10/x
30 = x
x = 30 salads
You would need to buy 30 salads to get $10 in coupons.
Hope this helps!! :)
Answer:
4
4 tens are in 40
d ) f(x)= -5x-19 is most likely