Evaluate the expression when x = -4 and y = 7. -3x + y

19

Step-by-step explanation:

IF YOU DO NOT UNDERSTAND, PLEASE READ.

The answer is 19, and here's why. Evaluate the expression, so that means there is no specific way it needs to be solved. It doesnt need to be in simplest form or in fraction form, its just plain and simple. So, this problem is easy when you take a look at the equation. It says -3x + y. ALL you have to do is plug in the numbers. X = -4, so plug that into the same place that its in, in the problem. Since X is touching -3, they have to be multiplied. -3 * -4 = 12 since 2 negatives multiplied make a positive. Take THAT 12, and then add that to 7. Now its 12 + 7. And that gives you 19.

do i do it on a graph?

step-by-step explanation:

d. 8

step-by-step explanation:

the given radical expression is:

we can rewrite this as:

we express as square numbers to get;

the exponents will now cancel out to give.

the correct answer is d