What gives me negative 17 but positive 10

Which two statements about financial service companies are true? They offer loans only to consumers who have good credit ratings. They partner with businesses to provide credit to consumers.

Elvira is making a calendar for the month of May. She is using poster board that is in the shape of a rectangle. The base of the rectangle is 18 inches. The height is 24 inches. What is the area of the poster board? Area = base x height

Sarah is planning to fence in her backyard garden. One side of the garden is 34 feet long, another side is 30 feet long, and the third side is 67 feet long. If the fencing material costs $3.00 per foot, how much will Sarah's fence cost?

271+425 use rounding or compatible numbers to estimate the sum

Mr Lopez arranges 48 dry erase markers into 8 equal groups for his math station draw a tape diagram and label the number of dry erase markers

Suppose that 5% of the general population has a disease and the test for the disease is accurate 80% of the time. What is the probability of testing positive for the disease?

Ryan missed 20% of the questions on his social studies six weeks test. If there were 60 questions on the test, then how many questions did Ryan get RIGHT?

A certain batch of fireflies was observed to "flash" at the rate of 20.8 times per minute at 25°C, and at the lower rate of 5.0 times a minute at a temperature of 15°C.

The value of 7856 would change by how much if the 8 were replaced by 9

9=90 8=72 7=56 6=42 3=?