Which expression is equivalent to the given expression? 99pts giveaway

3x(1.05)

3x + 3x + 3x

1.05x + 1.05x + 1.05x

x + 3.15

1.05x + 3

Which function is increasing? o a. f(x)=(1/15)* o b. f(x)= (0.5)* o c. f(x)=(1/5)* o d. f(x) = 5*

Pick the expression that matches this description: a polynomial of the 5th degree with a leading coefficient of 7 and a constant term of 6 (choice a) 7x^5+2x^2+6 (choice b) 7x^6−6x^4+5 (choice c) 6x^7−x^5+5 (choice d) 6x^5+x^4+7

If 20% of a number is 35, what is 50% of that number?