You are saving for a skateboard that costs $125. your aunt gives you $45 to start and you save $3 each week. the expression 45 + 3w gives the amount of money you save after (w) weeks. a. how much will you have after 4 weeks, 10 weeks, and 15 weeks? show your work. b. after 20 weeks, can you buy the skateboard? explain your answer.

4 weeks= $57

45+3(4)

45+12=57

10 weeks= $75

45+3(10)

45+30=75

15 weeks= $90

45+3(15)

45+45=90

20 weeks=$105

No there is not enough money because you are $20 short after 20 weeks. You need to wait 7 more weeks

1/3

step-by-step explanation:

to find this, you can divide 12 by 4 which is 3 or you can multiply 4 until you reach 12 (4x3=12). both should give you 3, meaning theres three times less bananas than there are oranges.