Find \( \sum_{i=3}^{7}\left(3\left(\frac{1}{2}\right)^{i-1}\right) \) First write out the summation: Find the answer:

The dollar value \( v(t) \) of a certain car model that is \( t \) years old is given by the following exponential function. \[ v(t)=19,900(0.95)^{t} \] Find the value of the car after 6 years and after 12 years. Round your answers to the nearest dollar as necessary. Value after 6 years:

Question 7 (1 point) When converting \( 39.267^{\circ} \) to degrees-minutes-seconds what is the seconds? (round to 1 decimal place)

When converting \( 44.644^{\circ} \) to degrees-minutes-seconds what is the minutes? Your Answer:

Find the focus, directrix, vertex and axis of symmetry for the parabola \( (x-2)^{2}=12(y-3) \) Vertex \( =\square \) Focus \( =\square \) Directrix \( =\square \)

2. If \( A=\{a, b\} \), what is \( A \times A \) ? \( ^{*} \) \( \{a, b\} \) \( \{(a, a),(b, b)\} \) \( \{(a, b),(b, a),(a, a)\} \) \( \{(a, a),(b, b),(a, b),(b, a)\} \)