A person has \( \$ 31,000 \) invested in stock A and stock B. Stock A currently sells for \( \$ 30 \) a share and stock B sells for \( \$ 70 \) a share. If stock B triples in value and stock A goes up \( 50 \% \), his stock will be worth \( \$ 88,500 \). How many shares of each stock does he own?

5. Question 5. Solve \( 5 x-3=2 x+6 \)

3. Question 3. Solve \( x-5=3 x+2 \)

a \( \quad 2^{3} \cdot 2^{-4} \)

Three consecutive numbers their sum is 48 write an equation express that is .... \( \begin{array}{l}3 x+2=48 \\ 3 x+4=48 \\ 3 x+3=48 \\ 3 x-3=48\end{array} \)

Add \( 5 \mathrm{a}-3 \mathrm{~b} \) and \( -5 \mathrm{~b}+3 \mathrm{a} \) the result is ...... \[ \begin{array}{l}8 \mathrm{a}-8 \mathrm{~b} \\ 8 \mathrm{a}+8 \mathrm{~b} \\ 8 \mathrm{~b}-8 \mathrm{a} \\ 2 \mathrm{a}-2 \mathrm{~b}\end{array} \]