Match the situation to the graph that models it best. The x-axis represents time.New car prices over the past 40 years
A. 
B. 
C. 
D. 
Answer: C
Mathematics
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If r(t) is the position vector of a particle in the plane at time t, find the indicated vector.Find the acceleration vector.r(t) = (cos 2t)i + (4 sin t)j
A. a = (-4 cos 2t)i + (-16 sin t)j B. a = (-4 cos 2t)i + (-4 sin t)j C. a = (-2 cos 2t)i + (4 sin t)j D. a = (4 cos 2t)i + (-4 sin t)j
Mathematics
Translate the verbal phrase into a mathematical expression. Use x to represent the unknown number.A number minus 51
A. x + 51 B. 51 C. 51x D. x - 51
Mathematics
Graph the equation. Select integers for x, -3 ? x ? 3.y = 4x - 5
A. 
B. 
C. 
D. 
Mathematics
Perform all operations in correct order.112 + 8 × 11 - (7 + 6 × 4)
A. 1,388 B. 178 C. 226 D. 157
Mathematics