This in what I got:
(-7i)(10i)
-70i
Answer:

Step-by-step explanation:
we know that
Brenda requires 480 grams of couscous for 4 people
so
using proportion
Find out how many grams of couscous she requires for 14 people
Let
x -----> the amount of grams

13x-1
Is the answer, you have to get all you terms that being x+6+12x-7
6-7=-1
X+12x=13x
Put them together with the Xs first
13x-1
Answer:
- 3r + 18
Step-by-step explanation:
7r - 8r - 2r + 13 + 5 = 7r - 10r + 18