Danica wants to arrange her model cars in rows with exactly 6 cars in each row. she now has 23 model cars. what is the smallest number of additional cars she must buy in order to be able to arrange all her cars this way?
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She wants all her rows in 6 so she needs a number of cars divisible by 6 which the next one would be 24 so she needs 1 additional car

I'll do the first one for you. it isn't very hard at all.on number one, you have (50 × 3), which equals 150, and (3 × 3), which equals 9. after you establish that, you add 150 and 9 together. so, (150 + 9) equals 159.this means that 53 × 3 = 159.