Ejercicios de notación cieutificla \( 13800000000=1.38 \times 10^{10} \) \( 24398000=2.4398 \times 10^{7} \) \( 30.000287= \)

6) \( -x-3-5 x=-27 \)

El valor de un automóvil se devalúa un \( 10 \% \) cada año. Si su valor inicial es de \( \$ 24,000 \), ¿cuánto costará dentro de 12 años? Redondea tu resultado a dos decimales.

1. Seoran menjua keuntu

3. The stopping distance \( d \) (in ft ) for a car on Mulholland Drive is given by \( d(v)=0.012 v^{2}+1.8 v \), where \( v \) is the speed of the car in mph the instant before the brakes were applied. (a) If the car was traveling 50 mph before the brakes were applied, find the stopping distance. (b) If the stopping distance is 91.2 ft , how fast was the car traveling before the brakes were applied?

9. Mrs Low has some money to buy plates and bowls for her new house. If she buys \( p \) plates at \( \$ 12 \) each, she will have \( \$ 3 \) left. If she buys \( (p+4) \) bowls at \( \$ 7 \) each, she will have \( \$ 5 \) left. (i) Find the value of \( p \). (ii) How much money does Mrs Low have to buy plates and bowls? (iii) Mrs Low decides to buy 5 plates. She uses the remaining money to buy bowls. How many bowls can she buy?