228 Finde die Gleichung jener Parabel, die durch die Punkte \( P, Q \) und \( R \) geht und bestimme ihren Scheitel \( S \). \( \begin{array}{ll}\text { a) } P(-4 \mid 8), Q(0 \mid 0), R(10 \mid 15) & \text { b) } P(-3 \mid-3), Q(0 \mid 3), R(3 \mid 0) \\ \text { c) } P(1 \mid-1), Q(2 \mid 4), R(4 \mid 8) & \text { d) } P(-2 \mid 10), Q(2 \mid 10), R(3 \mid 20)\end{array} \)

Which expressions have a value between 7 and 8 ? Choose all that apply. A. \( 2 \pi \) B. \( \pi+4 \) \( \square \) C. \( \sqrt{48} \) D. \( \sqrt{56} \) E. \( \sqrt{62} \)

14 Numeric 1 notni Samuel babysits for 5 hours and earns \( 464: 25 \). How much money does Samuel earn per hour liype your answer...

The person is of average height. Benicio has measured the person's height on the scale drawing to 7 cm and the height of the tree on the scale drawing to be 24.5 cm Write down an estimate for the real height of the tree.

1. \( 9+7(3 x+4)+28 \)

2. Considere o desenvolvimento do binómio seguinte: \( \left(\frac{2}{x}+\sqrt{x}\right)^{20} \), com \( x \geq 0 \). Determine o termo cuja parte literal é \( x^{7} \).