Answer: -9
Step-by-step explanation: when you add unwhole numbers they move father into the negatives if its easier you can take away the - mark and add 7 + 2 which is nine then you put the sign back good luck love!
You need two equations to solve a two-variable equation.
Answer:
x^2 + 3x - 4
Step-by-step explanation:
solved using long division
<h2>The cost is same for both the options if we purchase 27 photos</h2>
Step-by-step explanation:
Cost of a photo at a local store is $0.25 per photo. This cost can be modeled to be linear in number of photos as
.
Cost of photos purchased online is $0.15 per photo. However there is a shipping cost of $2.70. This can also be modeled to be linear in number of photos as
.
Let us assume both costs are the same if we purchase
photos.
So, 



∴ On purchasing 27 photos, cost for both the options is the same.