Given P(A) = 0.25, P(B) = 0.64 and P(A and B) = 0.22, find the value of P(A or B), rounding to the nearest thousandth, if necessary.

Arestaurant chef made 1 1/2 jars of pasta sauce. each serving of pasta requires 1/2 of a jar of sauce. how many servings of pasta will the chef be able to prepare using the sauce?

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?

Idon't get undoing if its pass adding and subtracting so can someone ? x-2 over 5 = 18