Olga says: If you subtract 8 from my number, and multiply the difference by 2, the result is -13. What is Olga's number?

A. 1.5

B. 14.5

C. 10.5

D. -2.5

HELP ME AND FAST PLS!

Would the answer be -18?

(01.04 mc) an ice sculpture is melting because of heat. assuming its height changes bynegative 5 over 32m every hour, what will be the change in height after 4 hours?

Add, subtract, multiply, or divide as indicated. list any restrictions for the variable(s) and simplify the answers when possible. 1) x-2 / x+5 + 3x / 2x-1 2) x+6 / x-6 - x^2 / x+6 3) x+9 / x-4 + x+2 / x^2-11x+28 4) x / x^2-64 + 11 / 2x^2+11x-40 5) 5 / x + 11 / x-3 - x-4 / x^2+2x-15

Why does the shape of the distribution of the weights of russet potatoes tend to be symmetrical?