Donnie is 7 years old. Donnie's age is 3 years less than half of Ana's age. The relationship between their ages can be modeled by the equation 12−3=7, where x is Ana's age. How old is Ana?

What is the number 321,000,000 in scientific notation? also what is the number? ?

If p(a) = 0.70 and p(b) = 0.20, then a and b are independent events if

Afunction, f(x), represents the height of a plant x months after being planted. students measure and record the height on a monthly basis. select the appropriate domain for this situation. a. the set of all positive real numbers b. the set of all integers oc. the set of all positive integers od. the set of all real numbers reset next