Let f(x)=x^2+3x-12 what is the average rate of change from x=3 and x=5?

can someone me out and show your work

11

Step-by-step explanation:

The average rate of change of f(x) in the closed interval  [ a, b ] is

here [ a, b ] = [ 3, 5 ]

f(b) = f(5) = 5² + 3(5) - 12 = 25 + 15 - 12 = 28

f(a) = f(3) = 3² + 3(3) - 12 = 9 + 9 - 12 = 6

Hence

average rate of change = = = 11

c. 65°

step-by-step explanation:

we are given a triangle with two known angles, 62° and 53°, while the third angle x is unknown and we are to find its value.

we know that the sum of angles in a triangle is equal to a total of 180 degrees. so we can write it as:

x + 62° + 53° = 180°

solving to find the value of x:

x = 180 - (62 + 53) = 65°

therefore, the value of x in this triangle is 65°.

i think the answer is .36

step-by-step explanation:

what i did was only 2.88 divided by 8