Which is the best first step and explanation for solving this system of equations?

2x + 3y = 7
2x = 4y - 5

a ) subtract the second equation from the first equation
b ) add the two equations to one another
c ) multiply both sides of the first equation by 3
d ) subtract an equal amount from both sides of the first equation

The longer leg of a 30° 60° 90° triangle is 16 times square root of three how long is a shorter leg

F(n + 1) = f(n) – 8. if f(1) = 100, what is f(6)?

1. which of the following algebraic equations is equivalent to ? x^n = a a^n = x a^x = n x^a = n 2. 16^1/4= 1/2 2 4 3. (-36)^1/2= -6 1/6 no real number 4. 8^2/3= 4 8 16√2 )^5/2= 7,776 1/7,776 no real number 6. m ^ the square root of a^2m simplified is: 7. the square root of 3^3 times the square root of 2 simplified and in radical form is: