Whats negative 12 plus negative 9 minus negative 7

3.4 is 20% of what number

Find the simple interest Kara owes on a 1.5-year loan of $1,500 at an annual interest rate of 7.5%.

Micaela is 2 years older than Sam. In 4 years, the sum of their ages will be 40. How old is Micaela now? Describe and fix any errors in the solution. Let m = Micaela's age and s = Sam's age. m = s + 2 (s + 4) + (s + 2 + 4) = 40 s = 15 Sam is 15.

Simplify ((a/b) + 2) ((b/a) + 2).

Using the illustration below, calculate the area of the circle.

What is the domain and range for { (0,-5), (1,3), (2,2), (0,4) (-5,6), (3,4) }

Simplify the expression (1.08x10^-3) x (9.3x10^-3) divided by 0.1 Enter your answer in scientific notation.

In a certain population, 10% of the people can be classified as being high risk for a heart attack. a) Three people are randomly selected from this population. What is the probability that exactly one of the three are high risk

Whats the awnser x-9.8=24

2. What is f (-2) if f (x) = - x?