Answer:
24 blocks will be needed to make the tower that is 4 feet high
Step-by-step explanation:
Let us use the ratio method to solve the question
∵ Charlie knows that 3 blocks are needed to make a tower that is 
    0.5 foot high
∵ He needs to make a tower that is 4 feet high
→ By using the ratio method
→  Blocks  :  height (ft)
→   3          :   0.5
→   x          :   4
→ By using the cross multiplication
∵ x × 0.5 = 3 × 4
∴ 0.5x = 12
→ Divide both sides by 0.5 to find x
∵  =
 = 
∴ x = 24
∵ x represents the number of blocks
∴ 24 blocks will be needed to make the tower that is 4 feet high
 
        
             
        
        
        
B) sunlight travels through space - there is nothing to bounce off of until it hits an atmophere
        
                    
             
        
        
        
Her goal is 60 boxes. this is all the work i did basically i set it up as an equation of looking for x and that’s my work so i hope it helps :)