HOPE it helps!!!!!!!
plz mark as a brainliest answer!!!!!
Answer:

Step-by-step explanation:
Before we find x, we need to set up this triangle a little more. We need to find the triangle's altitude before we can solve for x. We will use the heartbeat method to find the altitude.
Let altitude = y; solve for y:




Now that we know the altitude, we can use the Pythagorean Theorem to find the hypotenuse (x).





Since c and x are the same; c is just the hypotenuse in the Pythagorean Theorem.

To simplify this expression would be 4x-3
Answer:
A child's dinner costs $4
Step-by-step explanation:
7 + 7 = 14
22 - 14 = 8
8 / 2 = 4