I don't understand this question can someone help me with this please, please explain!! and thank you for the help!! If u dont know try your best :D

Answer:
1. 4x=36
2. x+3 = 15
Step-by-step explanation:
so for 1 if one cupcake is $4.00 that means multiplying it by x gets you $36.00
and the 4 next to the x means multiplyand x is sam and 15 is marco sam is 3 years younger so x+3=15 and x being 12 <3 hope this helps