Answer:
There are 40 problems on the test
Step-by-step explanation:
Let p = the number of problems on the test
The number of problems on the test times the percent correct is the number correct
p * 85% = 34
p * .85 = 34
Divide each side by .85
p * .85/.85 = 34/.85
p = 40
There are 40 problems on the test
Answer:
39
Step-by-step explanation:
39 is a multiple of 13. 13,26,39.
3+9= 12 which is an even which works both for 6 and 4. 4,8,12. 6,12
Answer: The surface area of the cube is 385 mm^2.
When we are finding the surface area of a shape, we need to add up all the areas of each face. In this case, there are 6 faces.
Each face is the shape of square with sides of 8 mm. So the area of each face is 8 x 8 = 64 square mm.
Since we have 6 faces, we will multiply 64 by 6 to get 384 mm^2 in all.
For this case we have a function of the form:

Where,
A: initial quantity of copies sold
b: decrease rate
t: time in days
Substituting values we have:

Answer:
A function that represents the book sales days after the release is:
