Which sum does the model below represent?

(MODEL -
4 positive tiles
and 7 negative tiles.)

A . 4 + (negative 7) = negative 3
B . 4 + 7 = 11
C. 8 + (negative 3) = 4
D. 11 + (negative 4) = negative 3

Yoku is putting on sunscreen. he uses 2\text{ ml}2 ml to cover 50\text{ cm}^250 cm 2 of his skin. he wants to know how many milliliters of sunscreen (c)(c) he needs to cover 325\text{ cm}^2325 cm 2 of his skin. how many milliliters of sunscreen does yoku need to cover 325 \text{ cm}^2325 cm 2 of his skin?

One number is 4 less than 3 times a second number. if 3 more than two times the first number is decreased by 2 times the second number, the result is 11. use the substitution method. what is the first number?

Ahyperbola centered at the origin has a vertex at (-6,0) and a focus at (10,0)