Answer:
-3f - 10
Step-by-step explanation:
-1 times 10 = -10
-1f times 3f = -3f
Sorry if this isn't right.
Answer:
c. how late it is in the evening is a function of the length of time the shutter needs to stay open.
Given :
Emily sells erasers for $2 per package and pencils for $5 per package. she sells 220 total packages and earns $695.
To Find :
The number of packages of erasers and pencils that were sold
.
Solution :
Let, number of erasers are x and pencils are y.
So, x + y = 220 ....1
Also, 2x + 5y = 695 ....2
Solving equation 1 and 2, we get :
![2(220-y)+5y = 695\\\\440 - 2y + 5y = 695\\\\3y = 255\\\\y=85](https://tex.z-dn.net/?f=2%28220-y%29%2B5y%20%3D%20695%5C%5C%5C%5C440%20-%202y%20%2B%205y%20%3D%20695%5C%5C%5C%5C3y%20%3D%20255%5C%5C%5C%5Cy%3D85)
x = 220 - 85 = 135
Therefore, the number of packages of erasers and pencils that were sold are 135 and 85 respectively.
Hence, this is the required solution.