Me podrían explicar el método de diferencias de las sucesiones cuadraticas, por favor?

Agarden consists of an apple tree, a pear tree, cauliflowers, and heads of cabbage. there are 40 vegetables in the garden. 24 of them are cauliflowers. what is the ratio of the number of cauliflowers to the number of heads of cabbage?

The probability that an adult possesses a credit card is .70. a researcher selects two adults at random. by assuming the independence, the probability that the first adult possesses a credit card and the second adult does not possess a credit card is:

Which inequality statement describes the two numbers on a number line? "? 7 and a number 5 units to the right of ? 7"