What is m∠a? enter your answer in the box. m∠a =

The three inside angles of a triangle equal 180 degrees.

All the 3 given angles together to equal 180 to solve for x, then calculate angle A.

x + (x-8) +(3x+13) = 180

Simplify the left side by combing like terms:

5x +5 = 180

Subtract 5 from each side:

5x = 175

Divide both sides by 5:

x = 175/5

x = 35

Now x is known, replace x in the equation for angle A:

3x+13 =

3(35) +13 =

105+13 = 118

Angle A = 118 degrees.

the correct answer is b. negative exponential growth.

step-by-step explanation:

you can tell it's an exponential function because it decreases rapidly then levels out and never touches the x-axis.

it is negative because the y-axis decreases as the x-axis increases.

therefore it is a negative exponential growth graph.

hope i !