Solve and check the equation.1.3x - 3.8 = 0.8x + 0.05
A. {7.7}
B. {7.69}
C. {7.623}
D. {-0.13}
Answer: A
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Solve.The gravitational attraction A between two masses varies inversely as the square of the distance between them. The force of attraction is 4 lb when the masses are 3 ft apart, what is the attraction when the masses are 6 ft apart?
A. 4 lb B. 2 lb C. 3 lb D. 1 lb
Solve the problem.Find the amount of increase if 200 is increased by 5% .
A. 10 B. 1 C. 0.1 D. 100
Determine whether the given function is one-to-one. If it is one-to-one, find its inverse.f(x) = x 
A. f-1(x) = x3 - 5
B. f-1(x) = x 
C. Not one-to-one
D. f-1(x) = x2 + 5
Find an equation of the parabola described and state the two points that define the latus rectum.Focus at (0, 1); directrix the line y = -1
A. y2 = 8x; latus rectum: (3, 4) and (-3, 4) B. x2 = 4y; latus rectum: (1, 2) and (-1, 2) C. x2 = 8y; latus rectum: (4, 1) and (-4, 1) D. x2 = 4y; latus rectum: (2, 1) and (-2, 1)