the multiplication table is displayed in the screenshot (up to 12)
Answer:
Step-by-step explanation:
If you factor the expression 7a+21 you can get:
7 × (a+3)
I take it each student is going to make a block.
She has 25 + 28 students all together which is 53 students total
Each one requires 512 magnetic blocks
Therefore she needs 53 * 512 = 27136 blocks.