Twice a number, minus a second number is -1. twice the second number is 9. find the two numbers.
a) 7 and 15.
b) 1 and 15
c) 3 and 7
d) 1 and 3
e) 3 and 15

show your work.

Enter numbers to write 0.000328 0.000328 in scientific notation. 1 1 0.000328=3.28 × 0 . 000328 = 3 . 28 × =3.28×10 = 3 . 28 × 10

Mrs. avila is buying a wallpaper border to go on all of her kitchen walls. she wants to buy 5 extra feet of wallpaper border than she needs to be sure she has enough. she buys 55.5 feet of the border. the store owner selling the border uses the width of mrs. avila's kitchen to determine that the length of her kitchen must be 14.5 feet.

Write as a product: ac^2–ad+c^3–cd–bc^2+bd