Graph the solution of the system.x + 2y ? 2 x - y ? 0
A. 
B. 
C. 
D. 
Answer: C
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Solve the problem.A 1,000 gallon tank is filled with pure water. A salt solution with a concentration of 11 g/gal flows into the tank at a rate of 8 gal/min. The thoroughly mixed solution is drained from the tank at a rate of 8 gal/min.(a) Write an initial value problem for the mass of the salt.(b) Solve the initial value problem.
A. (a) m'(t) = -0.008m + 88, m(0) = 0 (b) m = -11,000e-0.008t + e-0.008 B. (a) m'(t) = -0.008m + 11,000, m(0) = 1,000 (b) m = 11,000e-0.008t + 88 C. (a) m'(t) = 0.008m - 88, m(0) = 11 (b) m = -88e0.008t + 88 D. (a) m'(t) = -0.008m + 88, m(0) = 0 (b) m = -11,000e-0.008t + 11,000
Convert 3x + 4y = 16 to slope-intercept form.
a. 4y = 3x - 16 b. 3y = 4x + 16 c. y = -3/4x + 4 d. y = 3/4x - 4 e. y = 4/3x + 3
Solve for the missing values. Round money to the nearest cent, rate to the nearest tenth of a percent, and time to the nearest day.Principal: 
Interest: $434Rate: 9.4%Time: 
daysMaturity value: $4569
A. $4135; 456 days B. $4035; 418 days C. $4135; 402 days D. $4135; 368 days
Solve the problem.The population of one city (in thousands) was 84.5 in 1970, 96.1 in 1980, and 100.8 in 1990. Let 
correspond to 1970 and 
to 1990. find the rule of a piecewise linear function f that models this data, that is a piecewise function with 
and 
alt="" style="vertical-align: -4.0px;" />.
A. f(x) = 
B. f(x) = 
C. f(x) = 4.990x + 84.5
D. f(x) = 