(khan academy)
what is the range of f? choose one (choice a) −3≤f(x)≤7 (choice b) the f(x) - values -6, -4, -2, and 6 (choice c) f(x) - values -3, 3, 6, and 7 (choice d) -6≤f(x)≤6

The range represents the possible y values for the function. They number from -3 to 7 inclusive.

A

y = 2x

step-by-step explanation:

if you divide each number in the sequence, you'll see that they all have a multiple factor of 2. each number in the series, and any other numbers which may continue, will be multiplied by 2. therefore, y is the next number in the sequence, and x is the current one, so, our formula will be y = 2x.

rick has $1400 and sally has $1500

step-by-step explanation:

to find amount of money rick has after 10 years :

principal = $1000 , time = 10 years , rate = 4% annually

to find amount of money sally has after 10 years :

her friend gives to pay her $50 per year, therefore money she has after 10 years = 50 × 10 = $500

also, sally gets $1000 after 10 years,

therefore, total amount of money sally has after 10 years = 500 + 1000 = $1500

so, after 10 years : rick has $1400 and sally has $1500