Simplify the expression by combining like terms
15 + 12x – 5.2 + 4y - 7

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?

Write an inequality and solve each problem.for exercises 11 and 12, interpret the solution.

[15 points, algebra 2]simplify the complex fraction and find the restrictions.