What is the image of the point (-7,9) after a rotation of 270° counterclockwise about the origin?

To find the coordinates of point J after a 270° counterclockwise rotation about the origin, multiply the x-coordinate by -1 and then interchange the x- and y-coordinates.

Step-by-step explanation:

i think thats the answer sorry if its wrong!

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

answer: 12,000

step-by-step explanation: first you ar e supposed to add. then multiply then subtract