activity_motoristas.xml

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:id="@+id/activity_motoristas"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:paddingBottom="@dimen/activity_vertical_margin"
    android:paddingLeft="@dimen/activity_horizontal_margin"
    android:paddingRight="@dimen/activity_horizontal_margin"
    android:paddingTop="@dimen/activity_vertical_margin"
    tools:context="com.example.adryangabriel.escolaronibus.Motoristas">

    <ImageView
        app:srcCompat="@drawable/pmotor"
        android:id="@+id/imageView3"
        android:layout_alignParentBottom="true"
        android:layout_alignParentLeft="true"
        android:layout_alignParentStart="true"
        android:layout_width="500dp"
        android:layout_height="350dp" />

    <ImageView
        android:layout_width="wrap_content"
        app:srcCompat="@drawable/logoescola"
        android:id="@+id/imageView5"
        android:layout_height="80dp"
        android:layout_alignParentTop="true"
        android:layout_alignParentRight="true"
        android:layout_alignParentEnd="true"
        android:layout_alignParentLeft="true"
        android:layout_alignParentStart="true" />

    <ImageButton
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        app:srcCompat="@drawable/back"
        android:layout_alignBottom="@+id/imageView5"
        android:layout_alignParentLeft="true"
        android:layout_alignParentStart="true"
        android:id="@+id/back" />
</RelativeLayout>