2^(x+3) - 2^(x-1)
please help with this math question please anyone!!!​

Find the greatest common factor of -30x 4 yz 3 and 75x 4 z 2.

F(x)=x/2-2 and g(x)=2x^2+x-3 find (f+g)(x)

At the beginning of the year, adrian's savings account balance was \$28$28. each week, he deposits another \$15$15 into that account, and he doesn't spend any of his savings. is his savings account balance proportional to the number of weeks since the start of the year?