Un negoziante vende maglie sportive a 10 euro con uno sconto del \( 10 \% \) su ogni maglia a partire dalla decima. Una societa compra un certo numero di maglie spendendo 153 euro. Quante maglie ha comprato? A. 20 B. 7 C. 16 D. 17 E. 18 D 18 ( 17

Problem 2: Melting Ice Volume If the Greenland ice sheet melts and loses 250 billion tons of ice, how many cubic meters of water will this produce? (Assuming the density of ice is about 0.917 tons per cubic meter, use the formula Volume=DensityMass ) Convert your answer into liters ( \( 1 \mathrm{m3}=1,000 \) liters).

Multiply. \[ -u^{3}\left(-2 u^{3}\right) \] Simplify your answer as much as possible.

Si \( f(x)=\int_{0}^{x} \frac{1}{\sqrt{t^{3}+2}} d t \), cuál de las siguientes afirmaciones es FALSA \( \begin{array}{llll}\square \text { a) } f \text { es continua en }[0,+\infty) \quad \square \text { b) } f(1)>0 \quad \square \text { c) } f^{\prime}(1)=\frac{1}{\sqrt{3}} & \square \text { d) } f(-1)>0\end{array} \)

Développer et simp suivantes : \( A=5 x(x-1)-x(2 x+4) \)

\( -2(x+1)^{1045} \)