What is the Answer to -1/2(4-2+8x?

If there are 12 moths and some have 31 days and others have 30 days how many have 28 days?

Astudent must have an average on five test that is greater than it equal to 80% but less than 90% to receive a final grade of b. devon's greades on the first four test were 78% 62% 91% and 80% what range if grades on the fifth test would give him a b in the course? ( assuming the highest grade is 100%)

The function f(x)= -(x+5)(x+1) is down. what is the range of the function?