I don't understand these problems and need help for my practice quiz....ten points to

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Dani

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first right answers? Solve the following system of equations
x+8y=7
x=6-8y

Find the domain of the function.
p(x)=x squared - 2x + 10.

Solve.
5/8x + 1/16x = 7/16 +x

Find the domain of the function. g(x)= 8/2-5x

On three consecutive passes, a football team gains 10 yards, and gains 23 yards. What number represents the total net yardage?

Multiply.
-7/5 x (2/7)

In 1994, the life expectancy of males in certain country was 64.8 years. In 1999, it was 67.2 year. Let E represent the life expectancy in year t and let t represent thenumber of years since 1994.
E(t)= _t + _
Use the function to predict the life expectancy of males in 2008
E(14)=
 
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