You don’t have to answer all just help. please

Step-by-step explanation:

a.) When you have the following equation To find the vertex you take the h value, change its sign (to positive in this case) and that will give you the x value. To find the y-value just take the z. This gives us (15,-100)

b.) The axis of symmetry is just the x value of the vertex which is 15

c.) I'm not too sure what this means but can tell you that it's concave up because there's no way x can be negative

d.)Because the a value is positive that means that the graph is concave up which means that it has a minimum. The minimum is just the y value of the vertex which is just -100

e.) I'm going to write this in interval notation. The domain is all the possible x values of the graph which is all real numbers or (-∞,∞). The range is all the possible y values. We know that the minimum is -100 which means all the possible y values are [-100,∞)

f.) This is obviously a parabola and because the graph is concave up and has a negative minimum there must be 2 x intercepts.

$4

step-by-step explanation:

$30×5=$150

$150 minus $130=$20

$20÷5=$4.

hope to and hope that my answer is brainliest.(follow me )

b is 38 degrees.

a is 52 degrees.

this is because if b is 38 and a is 14 degrees more than b than 38+14=52 and 52+38=90 degrees. hope this .