error CS0019: trying to increase velocity when key is pressed twice in quick succession

Hello there,

In my game when the user presses the d key in quick succession I want the speed of the player to increase and it to change animation.

However I get this error: Assets/Scripts/PlayerController.cs(29,26): error CS0019: Operator &&' cannot be applied to operands of type float' and `bool'

 using UnityEngine;
 using System.Collections;
 
 public class PlayerController : MonoBehaviour {
 
     public float maxSpeed = 0.5f;
     public float sprintSpeed = 2f;
     bool facingRight = true;
     
     Animator anim;
     Rigidbody2D rb;
 
     bool buttonPressed = false;
     float buttonDelay = 0.5f;
 
     void Start()
     {
         anim = GetComponent<Animator>();
         rb = GetComponent<Rigidbody2D> ();
     }
 
     void FixedUpdate()
     {
         float move = Input.GetAxisRaw ("Horizontal"); //how much we are moving
         
         anim.SetFloat ("Speed", Mathf.Abs (move));
         rb.velocity = new Vector2 (move * maxSpeed, GetComponent<Rigidbody2D>().velocity.y);
         buttonPressed = true;
         if(Input.GetAxisRaw ("Horizontal") && buttonPressed = true)
         {
             anim.SetBool("isRunning",true);
             rb.velocity = new Vector2 (move * sprintSpeed, GetComponent<Rigidbody2D>().velocity.y);
         }
 
         if (move > 0 && !facingRight) //if moving left and not facing left
             Flip (); //flip
         else if (move < 0 && facingRight) //if moving to the right and not facing right
             Flip (); //flip
     }
 
     void Flip()
     {
         facingRight = ! facingRight; // flips the character
         Vector3 theScale = transform.localScale; //flips the local scale
         theScale.x *= -1; //flip the x axis 
         transform.localScale = theScale; //apply all of this back to the local scale
     }
 
 }