Decide whether the problem is an equation or an expression.x + y = 7
A. Equation
B. Expression
Answer: A
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Completely factor the polynomial.5x2 - 10x - 25
A. 5x(x2 - 2x - 5) B. 5(x2 - 10x - 25) C. 5(x2 - 2x - 5) D. 5(x2 - 5x - 20)
Use the Binomial Theorem to find the indicated coefficient or term.The coefficient of x in the expansion of (4x + 5)5
A. 15,625 B. 12,500 C. 2500 D. 10,000
Write the equation of the line in slope-intercept form.Write the equation of the line perpendicular to 
that passes through the point (2, 2).
A. y = 
x - 
B. y = - 3x - 8
C. y = - 
x + 
D. y = - 
x - 
Solve.A gas station sells 4820 gallons of regular unleaded gasoline in a day when they charge $1.35 per gallon, whereas they sell 3923 gallons on a day that they charge $1.40 per gallon. Find a linear equation that relates gallons sold to price. Use this equation to predict the number of gallons sold at a price of $1.26 per gallon. Round to the nearest tenth when appropriate.
A. 6438.7 gal B. 6434.6 gal C. 6443.6 gal D. 6431.3 gal