Solve the radical equation. Check all proposed solutions.
= y + 4
A. y = -4
B. y = 8
C. y = 4
D. y = 0
Answer: C
Mathematics
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Solve the problem.Find an equation for the level curve of the function f(x, y) = 
that passes through the point 
.
A. y = 81 B. y = -81 C. y = ± 9 D. y = 9
Mathematics
Graph the function. Describe its position relative to the graph of the indicated basic function.f(x) = e-0.4x; relative to f(x) = ex
A. Stretched vertically
B. Stretched horizontally
C. Stretched horizontally;
reflected across the y-axis
D. Stretched vertically;
reflected across the y-axis
Mathematics
Solve the equation.7(2x + 1) + 9(2x + 1) = 144
A. 4 B. 6 C. 3 D. 5
Mathematics
Use identities to find the exact value of the expression.sin2 70° + cos2 70°
A. 0.49 B. 1 C. 0 D. 0.70
Mathematics