Evaluate this exponential expression. 3 • (5 + 4)2 – 42 =

Step-by-step explanation:

Given the exponential expression , it is necessary to follow these steps to evaluate it:

Make he addition inside the parentheses:

The exponent 2 indicates that you must multiply 9 by itself twice, then:

Now you need to multoply 3 by 81:

And finally, you must make the subtraction indicated. Then:

y = 5x + 17

step-by-step explanation:

a perpendicular line will be the opposite reciprocal slope of the given equation.   the slope given is -1/5 so the opposite reciprocal is 5

find b:

7 = 5 (-2) + b

7 = -10 + b

17 = b

write equation

y = 5x + 17