Evaluate the function at the indicated value.Find 
when f(x) = x2 + 7x - 5.
A. 2x+ h - 5
B. 
C. 1
D. 2x+ h + 7
Answer: D
You might also like to view...
Solve the problem.Let y(t) be the concentration of a substance in a chemical reaction. The change in the concentration, under appropriate conditions, is modeled by the equation 
where k > 0 is a rate constant and the positive integer n is the order of the reaction. Solve the initial value problem for a third-order reaction 
, assuming y(0) = 3 and k = 0.3.
A. y = 
B. y = 
C. y = 
D. y = - 
Express in terms of a base raised to a positive exponent. Then simplify, if possible.-x-8
A. -x8
B. - 
C. 
D. - 
Round the whole number to the given place value.3073, thousands
A. 3100 B. 2900 C. 3000 D. 4000
Solve the problem.Assume that the elevation E, in feet, of a sag in a proposed route is given by 
where x represents the horizontal distance in feet along the proposed route and 0 ? x ? 5000. For what x-values is the elevation 1150 feet? Round your answer to the nearest foot.
A. x = 556 ft or x = 7510 ft B. x = 556 ft or x = 7500 ft C. x = 566 ft or x = 7510 ft D. x = 566 ft or x = 7500 ft