91Ó°ÊÓ

Solve each equation. Check your solution. $$ 27=-9(y+5)+6(y+8) $$

Solve each equation. Check your solutions. \(35=7|4 x-13|\)

The formula for quarterback efficiency rating in the National Football League is \(\left(\frac{\frac{C}{A}-0.3}{0.2}+\frac{\frac{Y}{A}-3}{4}+\frac{\frac{T}{A}}{0.05}+\frac{0.095-\frac{I}{A}}{0.04}\right) \times \frac{100}{6},\) where \(C\) is the number of passes completed, A is the number of passes attempted, Y is passing yardage, T is the number of touchdown passes, and I is the number of interceptions. In 2005, Ben Roethlisberger of the Pittsburgh Steelers completed 168 of the 268 passes he attempted for 2385 yards. He threw 17 touchdowns and 9 interceptions. Find his efficiency rating for 2005.

Solve each equation. Check your solutions. \(-9=-3|2 n+5|\)

Solve each equation. Check your solution. $$ -7(p+7)+3(p-4)=-17 $$

Write an algebraic expression in which subtraction is performed before division, and the symbols ( ), [ ], or { } are not used.

Simplify each expression. $$ 7 a+3 b-4 a-5 b $$

Solve each inequality. Then graph the solution set on a number line. \(1.5-0.25 c<6\)

Write expressions having values from one to ten using exactly four 4 \(\mathrm{s}\) . You may use any combination of the operation symbols \(+,-, \mathrm{x}, \div,\) and / or grouping symbols, but no other digits are allowed. An example of such an expression with a value of zero is \((4+4)-(4+4) .\)

Simplify each expression. $$ 3 x+5 y+7 x-3 y $$