bro what grade are you in? this is super easy.
the two dots for question 3 represent 40 and 100, and the difference between these is 60.
for question 4 you merely count the dots for day 1; 7, and the dots for day 3; 5, then add these together. this leaves you with 12, which you then multiply by 3, since each dot represents 3 cupcakes. so your answer for 4 is 36.
question 3. 60
question 4. 36