At the Wild Thing Zoo, you can rent a motorized cart to tour the grounds for a $4 initial charge and $4 per hour. An equation that represents the total cost y for x hours is y = 4 + 4x. At Safari Zoo, you can rent the same cart for a $3 inital charge and $5 for hour. An equation that represents the total cost y for x hours is y = 3 + 5x. For how many hours is the total charge the same?

Question

At the Wild Thing Zoo, you can rent a motorized cart to tour the grounds for a $4 initial charge and $4 per hour. An equation that represents the total cost y for x hours is y = 4 + 4x. At Safari Zoo,  you can rent the same cart for a $3 inital charge and $5 for hour. An equation that represents the total cost y for x hours is y = 3 + 5x. For how many hours is the total charge the same?

anonymous · Answer

set 
$$4+4x=3+5x$$ and solve for $x$
subtract $4x$ from both sides to get 
$$4=3+x$$ then subtract 3to get 
$$x=1$$

anonymous · Answer

thank you so much! it took a me a while to get it but though. thanks a bunch!

anonymous · Answer

yw